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Testicular Cancer
Testicular cancer is a cancer that begins in one or both testicles, the organs that make sperm and testosterone. It most often…
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Tetanus
Tetanus is a serious disease caused by a toxin made by Clostridium tetani bacteria. The bacteria usually enter the body through broken…
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Tetanus Neonatorum
Tetanus neonatorum is a severe infection in a newborn caused by tetanus toxin. It usually develops when Clostridium tetani spores contaminate the…
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Thalassemia
Thalassemia is an inherited blood disorder in which the body makes less hemoglobin than it needs. Hemoglobin is the protein in red…
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Thrombocytopenia
Thrombocytopenia is the medical term for a platelet count that is lower than usual. Platelets are small blood cells that gather at…
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Thymic Carcinoma
Thymic carcinoma is a malignant tumor that starts in cells of the thymus, a small organ behind the breastbone in the upper…
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Thymoma
The thymus is a small organ in the upper chest, behind the breastbone, that helps the immune system develop. A thymoma is…
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Thyroid Adenoma
A thyroid adenoma is a usually benign growth that develops from thyroid tissue. It is one type of thyroid nodule, but not…
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Thyroid Cancer
Thyroid cancer begins when cells in the thyroid grow and divide abnormally. The thyroid is a small, butterfly-shaped gland at the front…
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Thyroid Disease
Thyroid disease is a group of conditions in which the thyroid makes too much, too little, or irregular amounts of thyroid hormone.…
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Thyroid Nodule
A thyroid nodule is a lump that forms within the thyroid gland, a butterfly-shaped gland at the front of the neck below…
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Tinnitus
Tinnitus is the perception of sound when there is no external sound source, such as ringing, buzzing, hissing, humming, clicking, or pulsing.…
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Tongue Tie
Tongue tie, also called ankyloglossia, occurs when the band of tissue under the tongue, called the lingual frenulum, restricts tongue movement. Some…
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Tonsillitis
Tonsillitis is inflammation of the tonsils, the small areas of immune tissue at the back of the throat. It is usually caused…
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Toxic Multinodular Goitre
Toxic multinodular goitre is an enlarged thyroid gland containing several nodules that make too much thyroid hormone. These hormones, mainly thyroxine and…
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Trichomoniasis
Trichomoniasis is a curable sexually transmitted infection caused by the parasite Trichomonas vaginalis. It can affect people of any sex and is…
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Trichotillomania
Trichotillomania is a mental health condition that causes repeated urges to pull out hair from the scalp, eyebrows, eyelashes, or other areas.…
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Tricuspid Valve Disease
Tricuspid valve disease affects the valve between the heart’s right atrium and right ventricle. The valve may become narrowed, making it harder…
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Trigeminal Neuralgia
Trigeminal neuralgia is a condition that causes sudden, severe facial pain, often described as an electric shock. It happens when the trigeminal…
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Trigger Finger
Trigger finger is a condition in which a finger tendon has trouble gliding smoothly as you bend or straighten the finger. This…
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Tuberculosis
Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis, a bacterium that most often affects the lungs. A person can have…
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Tularemia
Tularemia is a bacterial disease caused by Francisella tularensis. It can affect people and many animals, especially rabbits, rodents and other wildlife.…
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Tympanosclerosis
Tympanosclerosis is a condition in which hardened scar tissue or calcium deposits develop on the eardrum or in the middle ear. The…
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Type 2 Diabetes
Type 2 diabetes is a condition in which the body does not use insulin effectively, causing blood glucose, or blood sugar, to…
