Tongue cancer occurs when cells on your tongue start to grow and divide uncontrollably. Your tongue starts at your hyoid bone (located where your chin meets your neck) and ends at the floor of your mouth. When cancer affects the front part of your tongue (the part you can see), healthcare providers call it oral cancer or oral tongue cancer. If you develop cancer on …

Pulsatile tinnitus is a rare form of tinnitus. People who have tinnitus (pronounced “TIN-nite-us” or “TIN-e-tus”) may have constant noise in their heads that no one else hears. They often, but not always, describe it as a ringing sound. People who have pulsatile tinnitus hear noise that may be loud or soft but tends to happen in time with their …

Tinea versicolor is a common fungal infection that causes discolored skin. People with tinea versicolor develop white, yellow, red, pink or brown spots. It’s caused by an overgrowth of a type of yeast (fungus) that’s naturally found on your skin. Hot weather, humidity and sun exposure can make tinea versicolor worse. It’s not harmful or contagious but can be mildly …

Ringworm of the scalp (tinea capitis) is a rash caused by a fungal infection. It usually causes itchy, scaly, bald patches on the head. Ringworm gets its name because of its circular appearance. No worm is involved. Ringworm of the scalp is a contagious infection. It’s most common in toddlers and school-age children. Tinea capitis is related to athlete’s foot …

Trigeminal neuralgia (TN) causes episodes of intense facial pain that can disrupt your everyday activities. It typically happens when a blood vessel puts pressure on your trigeminal nerve near your brainstem. This nerve provides sensation to your head and face. Trigeminal neuralgia is a type of neuropathic pain. Trigeminal neuralgia isn’t life-threatening, but it can be life-altering. Activities as simple as chewing, talking, smiling and brushing your teeth …

A transient ischemic attack is like a temporary stroke. It means there’s a temporary (transient) lack of blood flow to part of your brain. Without blood flow, the brain cells malfunction and start to die (ischemia). Often shortened to TIA, a transient ischemic attack is a medical emergency that’s very similar to an ischemic stroke. The symptoms of the two are …

A thyroid nodule is an unusual lump (growth) of cells on your thyroid gland. Your thyroid gland is a small, butterfly-shaped endocrine gland located in your neck, below your Adam’s apple. It produces the hormones thyroxine (also called T4) and triiodothyronine (also called T3). These hormones play a role in certain bodily functions, including: Metabolism. Body temperature. Mood and excitability. Pulse and heart rate. Digestion. Thyroid nodules are …

Thrombophlebitis is a condition where you have pain and swelling that happen in relation to a blood clot in one of your veins. It most often happens in veins in your legs but can happen in any vein in your body. Depending on why it occurs, how severe it is and where it happens, this condition can sometimes indicate a …

Thrombocytosis (pronounced “throm-boe-sie-TOE-sis”) is having too many platelets in your blood. Platelets are blood cells that stop bleeding by sticking together to form a clot. Too many platelets, however, can cause your blood to become too sticky. In severe cases, thrombocytosis can cause dangerous clots in your blood vessels, increasing your risk of a stroke or heart attack. Your experience of thrombocytosis, including its …