Alien Hand Syndrome (AHS) is a rare neurological disorder distinguished by involuntary, seemingly purposeful limb movements coupled with a sensation of estrangement from the affected limb. This ...

It started as a quiet moment in front of the TV—until her hand turned against her. A 77-year-old woman was relaxing at home when she noticed her left hand slowly, deliberately stroking her own face ...

Tens of millions of people are living with a rare disease, defined as a condition suffered by fewer than 200,000 people. Global experts have identified more than 7,000 of these conditions, which ...