With this condition, you grind or clench your teeth when you're awake or while you're sleeping. This can damage your teeth and cause pain in your jaw.
Disease
Temporal lobe seizure
Learn about this burst of electrical activity that starts in the temporal lobes of the brain. This can cause symptoms such as odd feelings, fear and not responding to others.
Disease
Tendinitis
Repetitive activities and weekend warrior exercise can bother tendons, causing pain and swelling.
Disease
Tendinopathy
Repetitive activities can injure tendons, causing pain and swelling. Wear and tear from age can also cause tendinopathy. These tendon injuries are common in the hands, arms and legs.
Disease
Tennis elbow
Repeated motion of the wrist and arm often cause this condition. It affects athletes and nonathletes. Learn how to prevent and treat it.
Disease
Tension headache
These common headaches can be triggered by stress. Healthy habits and medicines can help manage them.
Disease
Testicular cancer
Learn about cancer that starts in the testicles. Treatments include surgery, chemotherapy and radiation therapy.
Disease
Testicular torsion
Sudden, severe pain in the scrotum could be testicular torsion. Learn about symptoms and treatment for this health emergency.
Disease
Tetanus
Learn about treatment of the serious bacterial infection commonly known as lockjaw and the vaccines that prevent it.
Disease
Tetralogy of Fallot
These four heart problems present at birth change how blood flows through the body. Know the symptoms and treatment.
Disease
Thalassemia
Some forms of this inherited blood disorder usually show up before the age of 2. Often, they cause anemia. Worse forms of the disease require regular blood transfusions.
Disease
Thoracic aortic aneurysm
Learn about this serious condition in which the upper part of the body's main artery becomes weak and may rupture.