Rare Disorders

These conditions may be infrequent, but that doesn't make them any less scary or puzzling. Causes can range from genetic abnormalities to certain diseases and infections.

Most Recent

Sister Wives Star Maddie Brown Brush’s Baby Daughter Undergoes Amputation Surgery

The reality star previously revealed to PEOPLE that her daughter Evangalynn has a rare condition that causes limb malformation.

My Constant Insomnia Turned Out to Be a Symptom of a Rare Disorder Called Hypophosphatasia

After doctors couldn't figure out why she was suffering such terrible insomnia, Heather Barrow, 41, did her own research—and she learned she was born with a rare genetic disorder that also affected her mom and teenage daughter.

More Rare Disorders

Two-Year-Old Born Battling Rare Prune Belly Syndrome Needs a New Kidney

Two-year-old will receive a kidney from a woman who had been following his story on social media.