Use the A-Z list to browse more than 6,000 health-related topics in our library. Clicking on a term opens the definition and, in most cases, links to more information.
An amino acid that the body uses to make nitric oxide, a compound that helps the inner lining of blood vessels to dilate (or widen). Some foods are fortified with L-arginine and supplements are available. Research into their effects is ongoing. More Information on L Arginine: Herbs & Supplements
Also Known As: "Aedes Triseriatus Encephalitis, La Crosse Virus"
Encephalitis caused by infection transmitted by Aedes triseriatus. It occurs primarily in children, chiefly in the Midwestern United States. It can affect the central nervous system and cause sometimes fatal complications. More Information on La Crosse Encephalitis: Brain Related Infections
Encephalitis caused by infection transmitted by Aedes triseriatus. It occurs primarily in children, chiefly in the Midwestern United States. It can affect the central nervous system and cause sometimes fatal complications. More Information on La Crosse Virus: Brain Related Infections
Analysis of samples of body tissues and fluids, including blood and urine. In children and newborns, they may be used to screen for common illnesses and determine whether further tests are needed. More Information on Lab Tests & Children: Pediatric Health Basics
Analysis of samples of body tissues and fluids, including blood and urine. They may be used to diagnose conditions that cause or contribute to emotional health problems or that need to be ruled out for a diagnosis. More Information on Lab Tests & Emotional Disorders: Emotional Health Basics
The folds of skin that form the inner lips (labia minora) and outer lips (labia majora) on both sides of the vaginal opening. More Information on Labia: Vaginal & Cervical Health
The folds of skin that form the inner lips (labia minora) and outer lips (labia majora) on both sides of the vaginal opening. More Information on Labia Majora: Vaginal & Cervical Health
The folds of skin that form the inner lips (labia minora) and outer lips (labia majora) on both sides of the vaginal opening. More Information on Labia Minora: Vaginal & Cervical Health
Fusion of the folds of skin outside the vagina, blocking part or all of the vaginal opening. It may result from lack of estrogen after an irritated area heals. Occurs mostly in girls and elderly women. More Information on Labial Adhesions: Vaginal & Cervical Health
A small band of skin running above and between the two front teeth that attaches to the inside tissue of the lips. There is one between the two upper teeth (superior or upper) and one between the two lower teeth (inferior or lower), More Information on Labial Frena: Oral Health Basics
A small band of skin running above and between the two front teeth that attaches to the inside tissue of the lips. There is one between the two upper teeth (superior or upper) and one between the two lower teeth (inferior or lower), More Information on Labial Frenulum: Oral Health Basics
A small band of skin running above and between the two front teeth that attaches to the inside tissue of the lips. There is one between the two upper teeth (superior or upper) and one between the two lower teeth (inferior or lower), More Information on Labial Frenum: Oral Health Basics
"Labile Diabetes" is more commonly referred to as "Unstable Diabetes" in the medical community. Unstable Diabetes
Also Known As: "Brittle Diabetes"
A type of diabetes in which a person's blood glucose level swings from high to low and back to high. Also called "brittle diabetes" or "labile diabetes." More Information on Unstable Diabetes: Diabetes & Endocrine Basics
The expulsion of the fetus during birth from the uterus through the vagina to the outside of the body. Stages include dilation, expulsion and the placental stage. More Information on Labor & Delivery: Pregnancy Basics
Techniques and medications used to reduce the pain of childbirth. They include drugs (such as analgesics or anesthetics) and natural childbirth methods (such as Lamaze or the Bradley method). More Information on Labor & Delivery Pain Relief: Pregnancy Basics
"Labor & Delivery Plan" is more commonly referred to as "Birth Plan" in the medical community. Birth Plan
Also Known As: "Birthing Plan, Childbirth Plan"
A birth plan is a short list of preferences a woman has for the methods to be used in the labor and delivery of her child, unless medical necessity requires otherwise. More Information on Birth Plan: Pregnancy Basics
Analysis of samples of body tissues and fluids, including blood and urine. In children and newborns, they may be used to screen for common illnesses and determine whether further tests are needed. More Information on Laboratory Tests: Pediatric Health Basics
"Labored Breathing" is more commonly referred to as "Breathing Problems" in the medical community. Breathing Problems
Also Known As: "Trouble Breathing, Breathing Difficulty"
Allergies, asthma and other conditions can lead to a variety of breathing problems, from mild congestion to severe shortness of breath. More Information on Breathing Problems: Breathing & Lung
Also Known As: "Viral Labyrinthitis, Bacterial Labyrinthitis"
Inflammation of the canals of the inner ear, usually due to bacterial or viral infection. Because the inner ear helps a person maintain balance, symptoms usually include dizziness and a sensation of spinning. More Information on Labyrinthitis: Ear Conditions
"Lacerations" is more commonly referred to as "Cuts & Other Common Wounds" in the medical community. Cuts & Other Common Wounds
Also Known As: "Punctures, Scratches, Scrapes, Abrasions"
The most common skin wounds include cuts (a break or opening in the skin), lacerations (a jagged and irregular tear), scratches (minor scrapes from sharp objects), abrasions (rubbing away of the skin) and punctures (piercing by pointed object). More Information on Cuts & Other Common Wounds: First Aid & Safety
An enzyme in the small intestine required to digest lactose, a sugar found in milk and milk products. A lack of this enzyme can result in lactose intolerance.
A condition where levels of the lactase enzyme are low or absent, causing an inability to break down certain aspects of milk and milk products. It results in lactose intolerance. More Information on Lactase Deficiency: Food Allergy & Intolerance
An enzyme in the small intestine required to digest lactose, a sugar found in milk and milk products. A lack of this enzyme can result in lactose intolerance.
A compound produced when insufficient oxygen is present in cells to break down pyruvate to acetyl CoA. It builds up in skeletal muscles during extensive anaerobic exercise, causing temporary muscle pain.
An enzyme that helps metabolism and is found in nearly all body tissues. There is more of one form of this enzyme (LDH1 levels) in the blood than another form (LDH2) following a heart attack.
The process by which the mother's body synthesizes and secretes breast milk following the birth of a child. More Information on Lactation: Newborn Care
Health professionals trained and certified to specialize in education about and promotion of breastfeeding. They can assess problems and assist mothers in proper positioning and attachment. More Information on Lactation Consultants: Newborn Care
Health professionals trained and certified to specialize in education about and promotion of breastfeeding. They can assess problems and assist mothers in proper positioning and attachment. More Information on Lactation Specialists: Newborn Care
A compound produced when insufficient oxygen is present in cells to break down pyruvate to acetyl CoA. It builds up in skeletal muscles during extensive anaerobic exercise, causing temporary muscle pain.
The anaerobic energy system that uses glycolysis to rapidly produce energy (ATP) and lactate. A single glucose unit from glycogen is partially broken down to yield three ATP molecules and two lactic acid molecules.
A build-up of lactic acid in the body that can lead to dizziness, breathing problems, vomiting and stomach pain. Its potential causes include uncontrolled diabetes, liver disease, kidney problems or side effects of medications. More Information on Lactic Acidosis: Diabetes & Endocrine Basics
One of several bacteria in the genus lactobacillus. It is used with streptococcus salivarius in the production of yogurt and is considered to be a "friendly" bacterium that protects against some unhealthy organisms.
A type of sugar found in milk and dairy products (cheese, butter, etc.). People who lack the enzyme lactase, required to digest lactose, are said to be lactose (milk) intolerant. More Information on Lactose: Food Allergy & Intolerance
"Lactose Intolerance" is more commonly referred to as "Milk Intolerance" in the medical community. Milk Intolerance
Intolerance to dairy products caused by a lack of the lactase enzyme, needed to digest lactose. Symptoms include gas, bloating and abdominal pain. An intolerance is not the same as an allergy because the immune system is not involved. More Information on Milk Intolerance: Food Allergy & Intolerance
A test for lactase deficiency performed by measuring the levels of milk sugar in the blood after a patient drinks a milk sugar liquid. More Information on Lactose Tolerance Test: Food Allergy & Intolerance
Also Known As: "Late Onset Autoimmune Diabetes of Adulthood, Youth Onset Diabetes of Maturity, Slow Onset Type 1 Diabetes, Autoimmune Diabetes of Adults, Progressive Insulin-Dependent Diabetes Mellitus, Latent Type 1 Diabetes, Slowly Progressive Type 1 Diabetes"
A form of type 1 diabetes that develops in adults and has some characteristics of type 2 diabetes. It may be referred to as type 1.5 (along with other conditions). Some people diagnosed with type 2 may actually have this condition. More Information on LADA: Type 1 Diabetes Basics
"Lady Windermere Syndrome" is more commonly referred to as "MAC Infection" in the medical community. MAC Infection
Also Known As: "MAC, Mycobacterium Avium Intracellulare, Mycobacterium Avium Complex, Mycobacterium Avium Complex Infection, MAI, Mycobacterium Avium"
A disorder that causes several different syndromes, including disseminated infections in people with HIV, pulmonary disease in people without compromised immune systems and cervical lymphadenitis in children. More Information on MAC Infection: Pneumonia & Lung Infection
A substance containing the poison cyanide that is found in plants and in the pits of many fruits. It may be marketed as having anticancer properties. However, this has not been proven. It is not approved for use in the United States.
A surgical procedure where a band is placed around part of the stomach, resulting in a small pouch and main stomach with a small opening between the two. It may be used in the treatment of obesity. More Information on Gastric Banding: Bariatric Surgery
An autoimmune condition caused by a disruption of electrical impulses between nerve and muscle cells of the neuromuscular junction. It is closely associated with cancer, especially small cell lung cancer. More Information on Lambert Eaton Myasthenic Syndrome: Myopathy
Rare inherited skin condition in newborns in which scaly, plate-like layers of skin are shed (desquamated). It persists throughout a patient's life and often is treated with oral retinoids beginning in early childhood. More Information on Lamellar Ichthyosis of Newborn: Newborn Care
Surgical procedure to relieve pressure on the spinal cord or nerve root caused by a herniated disc in the lumbar spine. Surgical removal of the bony arches on one or more vertebrae may be used to treat spinal stenosis. More Information on Laminectomy: Back, Neck & Shoulder Pain
"Lamivudine" is more commonly referred to as "Cidofovir" in the medical community. Cidofovir
Also Known As: "Stavudine, Didanosine, Indinavir"
A type of antiviral medications used to treat viral infections. They may act by destroying or weakening the virus. More Information on Cidofovir: Cold & Infections Medications
A childhood neurological disorder that affects parts of the brain that control comprehension and speech. Children often initially develop normally, but then lose their language skills for no apparent reason. Prognosis varies. More Information on Landau Kleffner Syndrome: Pediatric Brain & Nerve
"Landry's Ascending Paralysis" is more commonly referred to as "Guillain Barre Syndrome" in the medical community. Guillain Barre Syndrome
Also Known As: "Acute Inflammatory Polyneuropathy, GBS, Infectious Polyneuritis, Acute Idiopathic Polyneuritis"
A disorder where nerve damage inhibits muscle movement and may cause temporary paralysis. Symptoms include tingling sensations, followed by weakness that moves up from the lower body. It is believed to be an autoimmune disorder. More Information on Guillain Barre Syndrome: Neuropathy
A brand of cardiotonics, medications that strengthen the heart's contractions so that it can circulate more blood with fewer beats. This slows the heartbeat without reducing the blood flow to the rest of the body. More Information on Lanoxicaps: Heart Drug & Medication
A brand of cardiotonics, medications that strengthen the heart's contractions so that it can circulate more blood with fewer beats. This slows the heartbeat without reducing the blood flow to the rest of the body. More Information on Lanoxin: Heart Drug & Medication
Soft, downy hair that covers a normal fetus from the fifth month before being shed by the time of birth. Individuals who lose much of their body fat also may develop lanugo as a form of insulation. More Information on Lanugo: Pregnancy Management
A thin, lighted tube with a tiny video camera that is inserted into the abdomen through a small incision. It is used to look inside the abdomen for diagnosis of disease and/or to perform surgeries without a large surgical opening. More Information on Laparoscope: Digestive Imaging Tests
"Laparoscopic Adjustable Gastric Banding" is more commonly referred to as "Gastric Banding" in the medical community. Gastric Banding
Also Known As: "Stomach Banding, Gastric Banding Surgery, Nonadjustable Gastric Banding, LAGB, Adjustable Gastric Banding, Laparoscopic Gastric Banding"
A surgical procedure where a band is placed around part of the stomach, resulting in a small pouch and main stomach with a small opening between the two. It may be used in the treatment of obesity. More Information on Gastric Banding: Bariatric Surgery
"Laparoscopic Appendectomy" is more commonly referred to as "Appendectomy" in the medical community. Appendectomy
Also Known As: "Appendectomy Surgery"
Surgical removal of an inflamed or infected appendix. It is one of the most common causes of emergency abdominal surgery in the United States. More Information on Appendectomy: Abdominal Pain
A biopsy performed with a laparoscope, allowing the tissue sample to be obtained from a highly specific area without the need for a large incision. More Information on Laparoscopic Biopsy: Digestive Imaging Tests
"Laparoscopic Bypass" is more commonly referred to as "Keyhole Surgery" in the medical community. Keyhole Surgery
Also Known As: "Buttonhole Surgery"
A bypass surgery in which a window is cut into the rib cage to allow surgeons to operate on a section of the heart without open-heart surgery. The heart is not stopped for the procedure, which is only used to correct single blockages. More Information on Keyhole Surgery: Bypass Surgery
"Laparoscopic Cholecystectomy" is more commonly referred to as "Gallbladder Surgery" in the medical community. Gallbladder Surgery
Also Known As: "Cholecystectomy, Open Cholecystectomy, Laparoscopic Gallbladder Surgery"
The surgical removal of the gallbladder. It may be performed in an open procedure or through small holes in the abdomen with the assistance of a laparoscope. More Information on Gallbladder Surgery: Liver, Pancreas & Biliary
"Laparoscopic Colectomy" is more commonly referred to as "Colectomy" in the medical community. Colectomy
Also Known As: "Left Hemicolectomy, Bowel Resection, Open Colectomy, Right Hemicolectomy, Partial Colectomy, Sigmoid Colectomy, Hemicolectomy"
Surgical removal of all or part of the colon (large intestine). Partial colectomy may also be called hemicolectomy. It may be performed in a open procedure (one large incision) or through laparoscopy (uses a camera and several smaller incisions). More Information on Colectomy: Digestive Treatments
"Laparoscopic Gallbladder Surgery" is more commonly referred to as "Gallbladder Surgery" in the medical community. Gallbladder Surgery
Also Known As: "Cholecystectomy, Open Cholecystectomy, Laparoscopic Cholecystectomy"
The surgical removal of the gallbladder. It may be performed in an open procedure or through small holes in the abdomen with the assistance of a laparoscope. More Information on Gallbladder Surgery: Liver, Pancreas & Biliary
"Laparoscopic Gastric Banding" is more commonly referred to as "Gastric Banding" in the medical community. Gastric Banding
Also Known As: "Stomach Banding, Gastric Banding Surgery, Nonadjustable Gastric Banding, Adjustable Gastric Banding, Laparoscopic Adjustable Gastric Banding, LAGB"
A surgical procedure where a band is placed around part of the stomach, resulting in a small pouch and main stomach with a small opening between the two. It may be used in the treatment of obesity. More Information on Gastric Banding: Bariatric Surgery
A minimally invasive version of gastric bypass surgery (a type of bariatric surgery for weight loss). It requires smaller incisions due to the use of a laparoscope. More Information on Laparoscopic Gastric Bypass: Bariatric Surgery
"Laparoscopic Hysterectomy" is more commonly referred to as "Hysterectomy" in the medical community. Hysterectomy
Also Known As: "Abdominal Hysterectomy, Vaginal Hysterectomy, Open Hysterectomy"
Surgical removal of the uterus that may be performed through the abdomen, vagina or by laparoscopy. It is used in the treatment of cancers or uterine disorders. It may be performed alone of in combination with a oophorectomy (removal of the ovaries). More Information on Hysterectomy: Uterine & Ovarian Health
"Laparoscopic Lymphadenectomy" is more commonly referred to as "Lymphadenectomy" in the medical community. Lymphadenectomy
Also Known As: "Lymph Node Excision, Lymph Node Removal, Open Lymphadenectomy, Lymph Node Dissection"
Surgical removal of one or more lymph nodes in order to examine the nodes for signs of cancer. It may be performed through tradition surgery (open) or using a technique to minimize incision size (laparoscopy). More Information on Lymphadenectomy: Cancer Basics
"Laparoscopic Myomectomy" is more commonly referred to as "Myomectomy" in the medical community. Myomectomy
Also Known As: "Abdominal Myomectomy, Hysteroscopic Myomectomy"
A procedure in which a surgeon remove a uterine fibroid while leaving the healthy areas of the uterus in place. Types include laparoscopic myomectomy, hysteroscopic myomectomy and abdominal myomectomy. More Information on Myomectomy: Uterine & Ovarian Health
"Laparoscopic Prostatectomy" is more commonly referred to as "Prostatectomy" in the medical community. Prostatectomy
Also Known As: "Simple Prostatectomy, Open Prostatectomy, Retropubic Prostatectomy, Radical Prostatectomy, Transurethral Prostatectomy, Perineal Prostatectomy, Partial Prostatectomy"
Surgical removal of all or part of the prostate gland and, in some cases, the surrounding lymph nodes. It may be performed in an open procedure, by laparoscopy or through the urethra (transurethral). More Information on Prostatectomy: Prostate & Testicular
Also Known As: "Diagnostic Peritoneoscopy, Diagnostic Laparoscopy, Peritoneoscopy"
Insertion of a small lighted viewing device (laparoscope) through an incision. It is performed in the diagnosis or treatment of many conditions, including gynecological or pregnancy-related problems. It is a possible alternative to open surgery. More Information on Laparoscopy: Uterine & Ovarian Health
Also Known As: "Bikini Incision, Vertical Incision, Bikini Cut, Transverse Incision"
Surgery that involves opening up the abdomen. The incision may be vertical (from the pelvic bone to the belly button) or horizontal (along the bikini line, also called a transverse incision). More Information on Laparotomy: Digestive Treatments
A type of lung cancer in which abnormal cells are large when viewed under a microscope (as opposed to small cell lung cancers). More Information on Large Cell Carcinoma: Lung & Chest Cancer
A type of lung cancer in which abnormal cells are large when viewed under a microscope (as opposed to small cell lung cancers). More Information on Large Cell Lung Carcinoma: Lung & Chest Cancer
"Large Loop Excision of the Transformation Zone" is more commonly referred to as "Loop Electrosurgical Excision Procedure" in the medical community. Loop Electrosurgical Excision Procedure
Also Known As: "LEEP, Loop Electrosurgery, Loop Excision, Loop Procedure, LLETZ"
A surgical technique involving the use of a thin electrified wire in the shape of a loop. It may be used to remove (excise) abnormal tissue in the cervix. More Information on Loop Electrosurgical Excision Procedure: Vaginal & Cervical Health
Cancer of the larynx. Most often begins in the glottis but can develop anywhere in the larynx. Men, people over the age of 65, and those who drink and/or smoke are at higher risk. More Information on Laryngeal Cancer: Head, Neck & Mouth Cancer
"Laryngeal Dystonia" is more commonly referred to as "Spasmodic Dysphonia" in the medical community. Spasmodic Dysphonia
Also Known As: "Spastic Dysphonia"
A type of dystonia (sustained muscle contractions leading to twisting movements) that involves the muscles that control speech. Speaking becomes strained, breathy or difficult. More Information on Spasmodic Dysphonia: Movement Disorders
Also Known As: "Vagal Laryngeal Neuralgia, Superior Laryngeal Neuralgia"
Fast and severe pain along the branches of the vagus nerve (in the head). It may be perceived as a lightning strike of pain to the face or jaw. It is a rare type of cranial neuralgia. Pain comes in short bursts and repeated attacks are common. More Information on Laryngeal Neuralgia: Ear, Eye & Face Pain
"Laryngotracheitis" is more commonly referred to as "Croup" in the medical community. Croup
Also Known As: "Laryngotracheobronchitis"
A respiratory illness that causes the larynx (voice box) or trachea (windpipe) of infants and young children to become inflamed, resulting in a hoarse, barking cough and difficulty breathing. More Information on Croup: Pneumonia & Lung Infection
"Laryngotracheobronchitis" is more commonly referred to as "Croup" in the medical community. Croup
Also Known As: "Laryngotracheitis"
A respiratory illness that causes the larynx (voice box) or trachea (windpipe) of infants and young children to become inflamed, resulting in a hoarse, barking cough and difficulty breathing. More Information on Croup: Pneumonia & Lung Infection
A procedure that uses a catheter to deliver a laser to the site of a blocked artery in order to destroy plaque that has built up in the artery. This allows blood to flow more freely. More Information on Laser Angioplasty: Catheter Tests & Procedures
Use of high-intensity light to shrink or destroy tumors or abnormal cells. It is most commonly used in the treatment of external cancers (e.g., skin) or in the relief of some cancer-related symptoms (e.g., bleeding, obstructions). More Information on Laser Cancer Therapy: Chemo & Radiation Therapy
Also Known As: "Tooth Laser Treatments, Gum Laser Treatments"
Lasers are used in many forms of dental treatment, including soft tissue surgery, resin treatments for fillings and appliances, bleaching procedures and, most recently, treatment of tooth decay and cavities. More Information on Laser Dental Treatments: Oral Health Basics
The elimination of hair with the use of a powerful light beam that targets the area of the skin that causes hair growth. More Information on Laser Hair Removal: Skin Surgery
Changing the surface texture and appearance of the skin with the use of a powerful light beam. More Information on Laser Skin Resurfacing: Skin & Aging
A treatment technique that involves using an intense beam of light that can cut, seal or vaporize skin tissue and blood vessels. More Information on Laser Skin Surgery: Skin Surgery
Use of high-intensity light to shrink or destroy tumors or abnormal cells. It is most commonly used in the treatment of external cancers (e.g., skin) or in the relief of some cancer-related symptoms (e.g., bleeding, obstructions). More Information on Laser Treatment: Chemo & Radiation Therapy
A brand of diuretics, medications that cause the kidneys to flush water and other substances (e.g., sodium) from the body through urine. More Information on Lasix: Heart Drug & Medication
Also Known As: "Lassa Virus, Lassa Fever Virus, Lassa Hemorrhagic Fever, Lassa Virus Infection"
A type of viral hemorrhagic fever endemic to Central Western Africa. It is acute and highly contagious, but most affected will not have symptoms. It may lead to fever, inflammation, muscular pains, difficulty swallowing and death. More Information on Lassa Fever: Tropical Disease
Also Known As: "Lassa Hemorrhagic Fever, Lassa Virus Infection, Lassa Virus"
A type of viral hemorrhagic fever endemic to Central Western Africa. It is acute and highly contagious, but most affected will not have symptoms. It may lead to fever, inflammation, muscular pains, difficulty swallowing and death. More Information on Lassa Fever Virus: Tropical Disease
Also Known As: "Lassa Virus Infection, Lassa Virus, Lassa Fever Virus"
A type of viral hemorrhagic fever endemic to Central Western Africa. It is acute and highly contagious, but most affected will not have symptoms. It may lead to fever, inflammation, muscular pains, difficulty swallowing and death. More Information on Lassa Hemorrhagic Fever: Tropical Disease
Also Known As: "Lassa Fever Virus, Lassa Hemorrhagic Fever, Lassa Virus Infection"
A type of viral hemorrhagic fever endemic to Central Western Africa. It is acute and highly contagious, but most affected will not have symptoms. It may lead to fever, inflammation, muscular pains, difficulty swallowing and death. More Information on Lassa Virus: Tropical Disease
Also Known As: "Lassa Virus, Lassa Fever Virus, Lassa Hemorrhagic Fever"
A type of viral hemorrhagic fever endemic to Central Western Africa. It is acute and highly contagious, but most affected will not have symptoms. It may lead to fever, inflammation, muscular pains, difficulty swallowing and death. More Information on Lassa Virus Infection: Tropical Disease
Pain in the back of the leg on flexing a patient's hip and knee and then extending the knee while the hip is flexed. Results from dural irritation, usually by a prolapsed disc. More Information on Lasègue Sign: Arm & Leg Pain
Children who are left at home alone for a large percentage of the day. Parents must make many important considerations before deciding that a child is old enough to be left without adult supervision, such the child's responsibility and safety.
Developmental stage between the ages of 19 to 21. This is a stage of advanced emotional and social development, during which a sense of identity is established, intimate relationships formed and preparations made for a career or vocation. More Information on Late Adolescence: Growth & Development
"Late Infantile NCL" is more commonly referred to as "Jansky Bielschowsky Disease" in the medical community. Jansky Bielschowsky Disease
Also Known As: "Late Infantile Neuronal Ceroid Lipofuscinosis"
A type of neuronal ceroid lipofuscinosis, a progressive neurological disease that begins in childhood. It usually begins by age 4 and progresses rapidly, becoming fatal by age 12. More Information on Jansky Bielschowsky Disease: Pediatric Brain & Nerve
"Late Infantile Neuronal Ceroid Lipofuscinosis" is more commonly referred to as "Jansky Bielschowsky Disease" in the medical community. Jansky Bielschowsky Disease
Also Known As: "Late Infantile NCL"
A type of neuronal ceroid lipofuscinosis, a progressive neurological disease that begins in childhood. It usually begins by age 4 and progresses rapidly, becoming fatal by age 12. More Information on Jansky Bielschowsky Disease: Pediatric Brain & Nerve
Also Known As: "Youth Onset Diabetes of Maturity, Slow Onset Type 1 Diabetes, Autoimmune Diabetes of Adults, Progressive Insulin-Dependent Diabetes Mellitus, Latent Type 1 Diabetes, Slowly Progressive Type 1 Diabetes, LADA"
A form of type 1 diabetes that develops in adults and has some characteristics of type 2 diabetes. It may be referred to as type 1.5 (along with other conditions). Some people diagnosed with type 2 may actually have this condition. More Information on Late Onset Autoimmune Diabetes of Adulthood: Type 1 Diabetes Basics
"Late Potentials" is more commonly referred to as "Ventricular Late Potentials" in the medical community. Ventricular Late Potentials
Certain heart impulses that are recorded and measured by a high-resolution EKG. They are used to screen for some potentially fatal ventricular arrhythmias. More Information on Ventricular Late Potentials: Arrhythmia
The period when an infecting organism (e.g. genital herpes) is in the body but is not producing symptoms, the organism can then reactivate and cause symptoms at another time. More Information on Latency: Infectious Disease Basics
Also Known As: "LADA, Late Onset Autoimmune Diabetes of Adulthood, Youth Onset Diabetes of Maturity, Slow Onset Type 1 Diabetes, Autoimmune Diabetes of Adults, Progressive Insulin-Dependent Diabetes Mellitus, Latent Type 1 Diabetes, Slowly Progressive Type 1 Diabetes"
A form of type 1 diabetes that develops in adults and has some characteristics of type 2 diabetes. It may be referred to as type 1.5 (along with other conditions). Some people diagnosed with type 2 may actually have this condition. More Information on Latent Autoimmune Diabetes of Adulthood: Type 1 Diabetes Basics
"Latent Diabetes" is more commonly referred to as "Prediabetes" in the medical community. Prediabetes
Also Known As: "Chemical Diabetes, Borderline Diabetes, Impaired Fasting Glucose, Subclinical Diabetes, Impaired Glucose Tolerance, IFG, IGT"
A condition in which glucose (blood sugar) levels are higher than normal, but not high enough to classify the patient as having diabetes. Formerly known as latent, borderline, subclinical or chemical diabetes, it may or may not progress to diabetes. More Information on Prediabetes: Diabetes & Endocrine Basics
A condition in which glucose (blood sugar) levels are higher than normal, but not high enough to classify the patient as having diabetes (formerly known as latent, borderline, subclinical or chemical diabetes). It may or may not progress to diabetes. More Information on Prediabetes & Children: Pediatric Diabetes
Also Known As: "Youth Onset Diabetes of Maturity, Slow Onset Type 1 Diabetes, Autoimmune Diabetes of Adults, Progressive Insulin-Dependent Diabetes Mellitus, Slowly Progressive Type 1 Diabetes, LADA, Late Onset Autoimmune Diabetes of Adulthood"
A form of type 1 diabetes that develops in adults and has some characteristics of type 2 diabetes. It may be referred to as type 1.5 (along with other conditions). Some people diagnosed with type 2 may actually have this condition. More Information on Latent Type 1 Diabetes: Type 1 Diabetes Basics
"Lateral Facial Dysplasia" is more commonly referred to as "Oculoauriculovertebral Dysplasia" in the medical community. Oculoauriculovertebral Dysplasia
Also Known As: "OAV, Goldenhar-Gorlin Syndrome, First Arch Syndrome, First And Second Branchial Arch Syndrome, Necrotic Facial Dysplasia, Franceschetti-Goldenhar Syndrome, Intrauterine Facial Necrosis"
A multiple congenital anomaly/mental retardation (MCA/MR) syndrome that could cause mild to severe physical and developmental problems. Some cases are complicated by one or more birth defects of the heart. More Information on Oculoauriculovertebral Dysplasia: Pediatric Heart
"Lateral Femoral Cutaneous Nerve Entrapment" is more commonly referred to as "Meralgia Paresthetica" in the medical community. Meralgia Paresthetica
Also Known As: "Bernhardt Roth Syndrome"
A disorder caused by compression of the lateral femoral cutaneous nerve at the point where it exits the pelvis. It is marked by tingling, numbness and burning pain in the outside thigh. In most cases, treatments are effective. More Information on Meralgia Paresthetica: Arm & Leg Pain
"Lateral Internal Sphincterotomy" is more commonly referred to as "Sphincterotomy" in the medical community. Sphincterotomy
Also Known As: "Endoscopic Papillotomy, Endoscopic Sphincterotomy, Lateral Sphincterotomy"
Surgery where the muscle between the common bile duct and the pancreatic duct is cut, usually to remove gallstones and other blockages. More Information on Sphincterotomy: Liver, Pancreas & Biliary
"Lateral Medullary Syndrome" is more commonly referred to as "Wallenberg Syndrome" in the medical community. Wallenberg Syndrome
Also Known As: "PICA Syndrome, Posterior Inferior Cerebellar Artery Syndrome"
A neurological condition caused by a stroke in the vertebral or posterior inferior cerebellar artery (PICA) of the brain stem. Symptoms include swallowing difficulties, hoarseness, rapid involuntary eye movements and balance problems. More Information on Wallenberg Syndrome: Stroke
"Lateral Sphincterotomy" is more commonly referred to as "Sphincterotomy" in the medical community. Sphincterotomy
Also Known As: "Endoscopic Papillotomy, Endoscopic Sphincterotomy, Lateral Internal Sphincterotomy"
Surgery where the muscle between the common bile duct and the pancreatic duct is cut, usually to remove gallstones and other blockages. More Information on Sphincterotomy: Liver, Pancreas & Biliary
Also Known As: "Natural Rubber Products, Brazilian Rubber Tree Sap"
The milky sap derived from the rubber tree and used in many products, such as rubber gloves, rubber bands, condoms, tubing and Band-Aids. One in every 1,000 people develops a latex allergy. More Information on Latex: Latex Allergy
Allergy to products made with latex (sap from the rubber tree). The most common reaction is contact dermatitis with symptoms similar to those caused by poison ivy. In some cases, it can cause anaphylaxic shock. More Information on Latex Allergy: Latex Allergy
A type of breast reconstruction procedure, often performed for women who do not have adequate lower abdominal skin or who have had previous surgeries. This procedure cannot make large breasts, but can make medium-sized breasts. More Information on Latissimus Dorsi Flap: Breast Health
"LATS" is more commonly referred to as "Thyroid Stimulation Immunoglobulin" in the medical community. Thyroid Stimulation Immunoglobulin
Also Known As: "TSI, Long Acting Thyroid Stimulator"
An abnormal immunoglobulin (a protein that acts as an antibody) that mimics the action of thyroid stimulating hormone (TSH) - stimulating the thyroid gland to produce hormones. TSI in the blood is a sign of a thyroid disease. More Information on Thyroid Stimulation Immunoglobulin: Thyroid & Parathyroid
"Laughing Gas" is more commonly referred to as "Nitrous Oxide" in the medical community. Nitrous Oxide
A blend of two gases, oxygen and nitrogen, that has a calming effect when inhaled and absorbed by the body. It is typically used to calm nervous children during dental visits and is considered to be very safe. More Information on Nitrous Oxide: Oral Medications
The washing out and cleaning of a hollow body area, such as the stomach, colon or ducts. Drinks, enemas and other processes may be used, depending on the area being flushed. More Information on Lavage: Digestive Treatments
"Lazy Bowel Syndrome" is more commonly referred to as "Atonic Colon" in the medical community. Atonic Colon
Also Known As: "Atonic Constipation, Lazy Colon"
A lack of normal muscle tone or strength in the colon that keeps food from traveling through the colon, causing chronic constipation. Overuse of laxatives or Hirschsprung's disease may cause it. More Information on Atonic Colon: Digestive Health Basics
"Lazy Colon" is more commonly referred to as "Atonic Colon" in the medical community. Atonic Colon
Also Known As: "Atonic Constipation, Lazy Bowel Syndrome"
A lack of normal muscle tone or strength in the colon that keeps food from traveling through the colon, causing chronic constipation. Overuse of laxatives or Hirschsprung's disease may cause it. More Information on Atonic Colon: Digestive Health Basics
"Lazy Eye" is more commonly referred to as "Amblyopia" in the medical community. Amblyopia
Poor vision in an eye that is otherwise normal that is often caused by crossed eyes or refractory problems (e.g., nearsightedness). Because the brain "learns" to ignore signals from the eye, this can cause permanent vision loss if untreated. More Information on Amblyopia: Pediatric Hearing & Vision
"LBBB" is more commonly referred to as "Left Bundle Branch Block" in the medical community. Left Bundle Branch Block
Also Known As: "Complete Left Bundle Branch Block, Complete LBBB, Partial Left Bundle Branch Block, Partial LBBB, Incomplete Left Bundle Branch Block, Incomplete LBBB"
An abnormal heart rhythm in which the electrical impulses through the heart's left bundle branch are delayed or blocked. It is "partial" or "incomplete" when involving either the anterior or posterior sections and "complete" when involving both. More Information on Left Bundle Branch Block: Arrhythmia
"LBRF" is more commonly referred to as "Relapsing Fever" in the medical community. Relapsing Fever
Also Known As: "Louse Borne Relapsing Fever, Tick Borne Relapsing Fever, TBRF"
Infection with a spirochete of the genus Borrelia transmitted through the bite of infected lice or ticks and marked by recurring high fever. More Information on Relapsing Fever: Infectious Disease Basics
"LCIS" is more commonly referred to as "Lobular Carcinoma" in the medical community. Lobular Carcinoma
Also Known As: "Invasive Lobular Carcinoma, Lobular Carcinoma in Situ"
A type of breast cancer in which malignant cells develop in the milk producing glands (lobes) of the breast. It may be contained in that area (in situ) or have spread to surrounding tissue (invasive). More Information on Lobular Carcinoma: Breast Cancer
"LCMV" is more commonly referred to as "Lymphocytic Choriomeningitis" in the medical community. Lymphocytic Choriomeningitis
Also Known As: "Lymphocytic Choriomeningitis Infection, Lymphocytic Choriomeningitis Hemorrhagic Fever, Lymphocytic Choriomeningitis Virus"
A type of hemorrhagic fever caused by an arenavirus and often followed by meningitis. It is transmitted to humans by contact with rodent urine, feces, semen and nasal secretions. More Information on Lymphocytic Choriomeningitis: Brain Related Infections
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