Fitness basics
Learning Center
Testicular torsion
Sudden, severe pain in the scrotum could be testicular torsion. Learn about symptoms and treatment for this health emergency.
Tinea versicolor
Learn about the symptoms, causes, treatments of this common skin infection that usually responds to treatment.
Transient global amnesia
When your memory suddenly disappears, it can be frightening — but transient global amnesia is typically temporary and harmless.
Traumatic brain injury
If a head injury causes a mild traumatic brain injury, long-term problems are rare. But a severe injury can mean significant problems.
Trichinosis
Learn about the symptoms, treatment and prevention of this type of roundworm infection.
Trichomoniasis
This common sexually transmitted infection is caused by a parasite. Reduce your risk by using condoms when you have sex.
Typhoid fever
Learn more about the symptoms, cause and treatment of this serious bacterial infection.
Umbilical hernia
Learn about this condition in which your intestines create a bulge near your navel.
Uveitis
Uveitis is a form of eye inflammation that can cause pain, redness and blurry vision. Prompt treatment is important.
Valley fever
Learn about symptoms and treatment for valley fever — an infection caused by fungi found in the soil of America's desert regions.
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