An elderly woman believed she was possessed by ghosts when she saw her arm move on its own before doctors discovered she was actually suffering from an extremely rare condition. A 77-year-old woman ...

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 ...

Imagine being attacked by one of your own hands, which repeatedly tries to slap and punch you. Or you go into a shop and when you try to turn right, one of your legs decides it wants to go left, ...