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.
"T Cell Lymphoma" is more commonly referred to as "Mycosis Fungoides and Sezary Syndrome" in the medical community. Mycosis Fungoides and Sezary Syndrome
A group of non-Hodgkin's lymphomas that first appear on the skin but can spread to the lymph nodes or major organs of the body. More Information on Mycosis Fungoides and Sezary Syndrome: Lymphoma (Hodgkin's & Non)
A type of white blood cell (WBC) that produces antibodies that remain on the surface of the cell (not released). T-cells are part of the immune system. They either directly attack a foreign substance or help other WBC manufacture antibodies. More Information on T Cells: Cancer Basics
A type of white blood cell (WBC) that produces antibodies that remain on the surface of the cell (not released). T-cells are part of the immune system. They either directly attack a foreign substance or help other WBC manufacture antibodies. More Information on T Lymphocytes: Cancer Basics
A measurement of bone mineral density that compares one individuals' bones to young adults of the same gender. More Information on T Score: Bone Health
Also Known As: "Progressive Locomotor Ataxia, Syphilitic Spinal Sclerosis"
Slow degeneration of nerve cells and fibers that carry sensory information to the brain. Degenerating nerves are in the dorsal columns of the spinal cord and carry information that help maintain a person's sense of position. More Information on Tabes Dorsalis: Movement Disorders
"Tachy-Brady Syndrome" is more commonly referred to as "Sick Sinus Syndrome" in the medical community. Sick Sinus Syndrome
Also Known As: "Brady-Tachy Syndrome, SSS, Sinus Node Dysfunction"
A condition in which the sinus node (the heart's natural pacemaker) malfunctions, causing an abnormal heart rhythm. More Information on Sick Sinus Syndrome: Arrhythmia
Also Known As: "Nervous Tachypnea, Transient Tachypnea"
Abnormally rapid breathing. Nervous tachypnea (more than 40 breaths per minute) may occur in response to fear or anxiety. Transient tachypnea in newborns (60 breaths per minute or more) usually resolves in three days. More Information on Tachypnea: Heart Signs & Symptoms
"Tacrolimus" is more commonly referred to as "Cyclosporine" in the medical community. Cyclosporine
Also Known As: "Efalizumab, Pimecrolimus, Alefacept, Antithymocyte Globulin, Anakinra"
Any one of a type of immunosuppressant, medications that suppress the immune system. They may be used to treat conditions such as rheumatoid arthritis as well as to prevent rejection following organ transplants. More Information on Cyclosporine: Arthritis
Tapeworm infection caused by pork tapeworms (Taenia solium) or beef tapeworms (Taenia saginata). More Information on Taenia Infection: Infectious Disease Basics
"Taenia Saginata Infection" is more commonly referred to as "Beef Tapeworm Infection" in the medical community. Beef Tapeworm Infection
Infection caused by the beef tapeworm, Taenia saginata. It is often the result of consuming undercooked beef products that contain tapeworm larvae. The infection does not spread outside the intestines. More Information on Beef Tapeworm Infection: Gastroenteritis & Food Illness
"Taenia Solium Infection" is more commonly referred to as "Pork Tapeworm Infection" in the medical community. Pork Tapeworm Infection
Infection by the pork tapeworm (Taenia solium), usually due to eating undercooked pork products that contain tapeworm larvae. Complications include the formation of cysts in body tissue (cysticercosis), including the brain (neurocysticercosis). More Information on Pork Tapeworm Infection: Infectious Disease Basics
Tapeworm infection caused by pork tapeworms (Taenia solium) or beef tapeworms (Taenia saginata). More Information on Taeniasis: Infectious Disease Basics
"Tailbone" is more commonly referred to as "Coccyx" in the medical community. Coccyx
The final portion of the spinal column, composed of three to five (usually four) fused vertebrae at the base of the spine. More Information on Coccyx: Back, Neck & Shoulder Pain
Also Known As: "Occlusive Thromboaortopathy, Aortic Arch Syndrome, Pulseness Disease"
An inflammatory disease of the aorta and its branches. Its cause is unknown. It is most common in Asian women between the ages of 15 and 30, but cases have been reported worldwide. More Information on Takayasu Arteritis: Heart Injuries & Infections
Also Known As: "Takayasu Arteritis, Occlusive Thromboaortopathy, Aortic Arch Syndrome, Pulseness Disease"
An inflammatory disease of the aorta and its branches. Its cause is unknown. It is most common in Asian women between the ages of 15 and 30, but cases have been reported worldwide. More Information on Takayasu Disease: Heart Injuries & Infections
"Talk Therapy" is more commonly referred to as "Psychotherapy" in the medical community. Psychotherapy
Also Known As: "Counseling"
Treatment of mental disorders through verbal and nonverbal communication about thoughts, feelings, emotions and behaviors. Sessions may take place in one-on-one, group or family settings. More Information on Psychotherapy: Therapy & Support
Parents need to strike a delicate balance when talking to children about allergies and asthma so that children understand their condition without becoming overly fearful. More Information on Talking to Children about Allergies & Asthma: Pediatric Allergy & Asthma
People with diabetes play an important role in managing their own condition and helping to prevent later complications. Therefore, it is important for patients to learn to talk to physicians, dietitians and others on their care team. More Information on Talking to your Diabetes Care Team: Diabetes & Endocrine Basics
A brand of antiarrhythmics, medications used to treat all types of irregular heart rhythms (arrhythmias) except an abnormally slow heartbeat. Some act directly on the heart to slow it down, and others act to restore a normal beating pattern. More Information on Tambocor: Heart Drug & Medication
A drug that inhibits the effects of estrogen on tumors that rely on this hormone for growth. They may be used in the treatment of breast cancers. Studies have shown that this drug may lower the risk of breast cancer in some women. More Information on Tamoxifen: Breast Cancer
Devices inserted into the vagina for use during menstruation to prevent menstrual blood from escaping the body. Use for a longer time than recommended increases the risk of a rare condition called toxic shock syndrome (TSS). More Information on Tampon Use: ObGyn Risk Factors
"Tamponade" is more commonly referred to as "Cardiac Tamponade" in the medical community. Cardiac Tamponade
Also Known As: "Pericardial Tamponade"
A severe condition characterized by the rapid build-up of fluid in the pericardium (the sac surrounding the heart). This puts strain on the heart muscle, weakening it. The faster this occurs, the more likely that a life-threatening event will result. More Information on Cardiac Tamponade: Heart Injuries & Infections
Darkening of the skin from exposure to UVA and UVB radiation from sunlight. UVA radiation causes immediate tanning which lasts a few hours or days. UVB radiation causes delayed tanning which appears a few days after exposure and lasts longer. More Information on Tanning: Skin & Hair Basics
Phytochemicals found in grapes, lentils, wine, tea and black-eyed peas. They may serve as anticarcinogens (preventing or fighting cancer) and may also be sold as ingredients in dietary supplements. More Information on Tannins: Herbs & Supplements
"Tantrums" is more commonly referred to as "Temper Tantrums" in the medical community. Temper Tantrums
Outbursts of emotion characterized by screaming and crying. These are common in young children but can be a source of great stress for parents. More Information on Temper Tantrums: Growth & Development
A type of flatworm parasite that can infect humans. Most cases of human infection are caused by pork, beef, dwarf or fish tapeworms. Infection typically occurs as a result of consuming food or water contaminated with tapeworm eggs or larvae. More Information on Tapeworm: Parasitic Disease
A type of flatworm parasite that can infect humans. Most cases of human infection are caused by pork, beef, dwarf or fish tapeworms. Infection typically occurs as a result of consuming food or water contaminated with tapeworm eggs or larvae. More Information on Tapeworm Infection: Parasitic Disease
Also Known As: "PAPVC, Total Anomalous Pulmonary Venous Return, Anomalous Drainage of Pulmonary Veins"
A condition in which the four pulmonary veins that bring oxygen-rich blood from the lungs back to the heart are not connected to the left atrium, the chamber into which they are supposed to re-enter the heart. More Information on TAPVR: Pediatric Heart
A term used to describe more than 19 different cancer-causing agents in tobacco smoke that form a tar-like substance in the lungs. It irritates the lungs and is a major cause of lung cancer. The average cigarette contains 7 to 15 milligrams of tar. More Information on Tar: Smoking & Tobacco
"Tar Bath" is more commonly referred to as "Coal Tar" in the medical community. Coal Tar
Also Known As: "Tar Treatment, Emollient Tar, Tar Emollient"
Thick, black byproduct of the manufacture of gas and coke (a carbon substance produced by heating coal) that is used to treat eczema, psoriasis, seborrheic dermatitis and other skin disorders. More Information on Coal Tar: Skin Drugs & Medications
"Tar Emollient" is more commonly referred to as "Coal Tar" in the medical community. Coal Tar
Also Known As: "Tar Bath, Tar Treatment, Emollient Tar"
Thick, black byproduct of the manufacture of gas and coke (a carbon substance produced by heating coal) that is used to treat eczema, psoriasis, seborrheic dermatitis and other skin disorders. More Information on Coal Tar: Skin Drugs & Medications
Also Known As: "Radial Aplasia Thrombocytopenia Syndrome, Tetraphocomelia Thrombocytopenia Syndrome, Thrombocytopenia Absent Radius Syndrome"
A syndrome named for its major characteristics: Thrombocytopenia (low platelet levels in the blood) and Aplasia (absence) of the Radius (a long bone of the forearm). The genetic condition may also include one or more congenital heart defects.
"Tar Treatment" is more commonly referred to as "Coal Tar" in the medical community. Coal Tar
Also Known As: "Emollient Tar, Tar Emollient, Tar Bath"
Thick, black byproduct of the manufacture of gas and coke (a carbon substance produced by heating coal) that is used to treat eczema, psoriasis, seborrheic dermatitis and other skin disorders. More Information on Coal Tar: Skin Drugs & Medications
A neurological syndrome caused by the long-term use of neuroleptic drugs, which are typically prescribed for psychiatric, gastrointestinal and neurological disorders. It is marked by repetitive, involuntary, purposeless movements. More Information on Tardive Dyskinesia: Movement Disorders
"Targeted Cancer Therapy" is more commonly referred to as "Molecular Therapy" in the medical community. Molecular Therapy
Also Known As: "Molecular Targeted Therapy"
Treatment that uses medications to block the growth or spread of cancers. They work by blocking specific molecules involved in the process of changing normal cells into cancer cells and the growth of tumors. More Information on Molecular Therapy: Chemo & Radiation Therapy
Also Known As: "Perineural Cysts, Sacral Nerve Root Cysts"
Fluid-filled sacs that most often affect nerve roots in the sacrum. These cysts compress nerve roots and cause lower back pain, sciatica, urinary incontinence and sexual dysfunction. Women are at much higher risk than men. More Information on Tarlov Cysts: Back, Neck & Shoulder Pain
"Tarsoplasty" is more commonly referred to as "Blepharoplasty" in the medical community. Blepharoplasty
Plastic surgery of the eyelids which may be performed to correct sagging eyelids, remove fatty bulges around the eye or eliminate hanging skin from the eyelids. More Information on Blepharoplasty: Skin & Aging
Hard deposits of mineralized material that may adhere to the crowns or roots of teeth. It is usually hard, rough and porous. Accumulation can lead to tooth decay and gum disease. More Information on Tartar: Oral Health Basics
Also Known As: "Yellow Number Five, FD&C Yellow Number Five"
A commonly used yellow dye that is known to cause an allergic reaction in some individuals. The reaction is commonly associated with hives or swelling. More Information on Tartrazine: Food Allergy & Intolerance
Taste literally means the sensation that occurs when food comes in contact with the taste buds of the mouth (e.g., sweet, sour, bitter, salty). The term is also often used to describe flavor, which is actually a combination of taste and smell. More Information on Taste Basics: Nutrition Basics
"Taste Disorder" is more commonly referred to as "Dysgeusia" in the medical community. Dysgeusia
A distortion or loss of the sense of taste. It may be used synonymously with one type (parageusia) that involves a bad taste in the mouth. More Information on Dysgeusia: Mouth & Tongue Disorders
The practice of making designs on the skin, usually for decoration or identification, by pricking and staining the skin with indelible color. More Information on Tattoo: Skin & Hair Basics
A procedure to eliminate designs on the skin etched in indelible ink for decorative or identification purposes. Common techniques include excision, dermabrasion and laser. More Information on Tattoo Removal: Skin Surgery
"Taxanes" is more commonly referred to as "Mitotic Inhibitors" in the medical community. Mitotic Inhibitors
Also Known As: "Antimitotic Agents, Antimicrotubule Agents"
A class of anticancer medications that work by interfering with cell division (mitosis). More Information on Mitotic Inhibitors: Cancer Drug & Medication
Also Known As: "Tay Sachs Syndrome, Tay Sachs Disorder"
A degenerative genetic disorder that affects the brain and nervous system. It is typically fatal by the age of 5 years. More Information on Tay Sachs Disease: Birth & Genetic Disorders
A degenerative genetic disorder that affects the brain and nervous system. It is typically fatal by the age of 5 years. More Information on Tay Sachs Disorder: Birth & Genetic Disorders
A degenerative genetic disorder that affects the brain and nervous system. It is typically fatal by the age of 5 years. More Information on Tay Sachs Syndrome: Birth & Genetic Disorders
"TB" is more commonly referred to as "Tuberculosis" in the medical community. Tuberculosis
Also Known As: "Mycobacterium Tuberculosis Infection, Tuberculosis Disease, Tubercular Infection, Consumption"
An airborne bacterial infection that typically affects the lungs. Infants are frequently tested for this disease, which can remain dormant for a long time and can usually be treated with antibiotics. More Information on Tuberculosis: Pneumonia & Lung Infection
"TBCWP" is more commonly referred to as "Transitory Benign Chest Wall Pain" in the medical community. Transitory Benign Chest Wall Pain
Also Known As: "Pediatric Chest Pain"
Brief and often sharp chest pain that is sporadic and harmless. Typically occurs in children, adolescents or young adults. More Information on Transitory Benign Chest Wall Pain: Chest & Related Pain
"TBRF" 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, LBRF"
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
"TCAs" is more commonly referred to as "Tricyclic Antidepressants" in the medical community. Tricyclic Antidepressants
Medications used to treat depression. In some cases, they also are used to treat obsessive-compulsive disorders or bedwetting in children. These drugs are used less commonly since the advent of SSRIs. More Information on Tricyclic Antidepressants: Psychiatric Medications
"TCOF 1" is more commonly referred to as "Treacher Collins Syndrome" in the medical community. Treacher Collins Syndrome
Also Known As: "Franceschetti-Zwalen-Klein Syndrome, Treacher Collins-Franceschetti Syndrome 1, Mandibulofacial Dysostosis, MFD"
A hereditary condition that primarily affects the structures of the head and face and is often associated with some degree of hearing loss. It may include one or more birth defects of the heart. More Information on Treacher Collins Syndrome: Birth & Genetic Disorders
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