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Learning Center
Tonic-clonic (grand mal) seizure
Learn about this type of seizure that can cause convulsions. Also know how to help if you see someone having one.
Tongue cancer
Learn how doctors use innovative operations, such as transoral robotic surgery, and radiation technology, including protons, for tongue cancer treatment.
Tinnitus
Tinnitus can be caused by many health conditions. As such, the symptoms and treatment options vary by person. Get the facts in this comprehensive overview.
Tinea versicolor
Learn about the symptoms, causes, treatments of this common skin infection that usually responds to treatment.
Thyroid nodules
Find out what can cause lumps in the thyroid gland and how your doctor may treat them.
Thyroid cancer
Learn about thyroid cancer diagnosis and treatment, including thyroid surgery, radioactive iodine and thyroid hormone therapy.
Thunderclap headaches
These headaches are sudden and severe, and can warn of a life-threatening condition — so seek immediate medical attention.
Thumb arthritis
This common condition can cause pain and mobility issues, making simple tasks difficult. Treatment may include medications, splints and sometimes surgery.
Thrombophlebitis
Learn more about this inflammation of a blood vessel that can interrupt flow.
Thrombocytosis
This condition occurs when your body produces too many platelets, the cells that help blood clot. Thrombocytosis can cause clotting or bleeding problems.
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