Skin care
Learning Center
Tetralogy of Fallot
These four heart problems present at birth change how blood flows through the body. Know the symptoms and treatment.
Thalassemia
Some forms of this inherited blood disorder usually show up before the age of 2, often causing anemia. More severe forms of the disease require regular blood transfusions.
Thoracic aortic aneurysm
Learn about this serious condition in which the upper part of the body's main artery becomes weak and may rupture.
Thoracic outlet syndrome
This group of conditions is caused by pressure on the blood vessels or nerves between the collarbone and rib. The pressure can cause pain and numbness.
Throat cancer
Learn more about this type of cancer that affects your throat (pharynx), voice box (larynx) or tonsils.
Thrombocytopenia (low platelet count)
Thrombocytopenia — Comprehensive overview covers symptoms, causes, treatment of a low platelet count.
Thrombocytosis
This condition occurs when your body produces too many platelets, the cells that help blood clot. Thrombocytosis can cause clotting or bleeding problems.
Thrombophlebitis
Learn more about this inflammation of a blood vessel that can interrupt flow.
Thumb arthritis
This common condition can cause pain and mobility issues, making simple tasks difficult. Treatment may include medications, splints and sometimes surgery.
Thunderclap headaches
These headaches are sudden and severe, and can warn of a life-threatening condition — so seek immediate medical attention.
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