Fitness basics
Learning Center
Triple X syndrome
Females with this genetic disorder have three X chromosomes instead of two. Symptoms can be mild or include developmental delays and learning disabilities.
Trigger finger
In this condition, a finger gets stuck in a bent position and may straighten suddenly with a snap. It happens most often in women over the age of 50.
Trigeminal neuralgia
Learn about this nerve condition that can jolt areas on the face with electric-shock-like pain.
Tricuspid valve regurgitation
A leaky tricuspid valve may make you feel tired and have difficulty exercising. Learn how this type of heart valve disease is diagnosed and treated.
Tricuspid atresia
Learn how this congenital heart defect blocks blood flow from the heart to the lungs. Treatment involves multiple surgeries.
Trichotillomania (hair-pulling disorder)
In this mental health condition, people can't resist urges to pull out hair from their body. They do this often. Therapy may help reduce or stop urges.
Trichomoniasis
This common sexually transmitted infection is caused by a parasite. Reduce your risk by using condoms when you have sex.
Trichinosis
Learn about the symptoms, treatment and prevention of this type of roundworm infection.
Traveler's diarrhea
Learn how to avoid contaminated food and water that may lead to this common travel hazard. Plus, find out what to do if it strikes.
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.
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