What’s Tay-Sachs disease?

Tay-Sachs is a genetic disease caused by a missing enzyme. Cynthia Tifft, MD, PhD, director of NIH’s Pediatric Undiagnosed Diseases Program, describes who develops the disease and how it’s diagnosed in infants.

Three examples of IRDs, and how different genetic eye diseases cause different types of vision loss.

Learn about these rare and very serious metabolic disorders.

Changes in your vision may be signs of other medical conditions.

Desmoid tumors are noncancerous and do not metastasize, but they can invade nearby tissues and structures.

Kids' migraines are more common than you think—but one type of therapy is offering hope.