Focal hand dystonia Focal hand dystonia is a neurological disorder that causes spasms and cramping of your hand. Experts believe this condition happens due to a dysfunction of the nerves that send ...

A muscle spasm, also known as a cramp, twitch or charley horse ... But they can also happen in one's arms, feet, or hands, and sometimes even in one's stomach muscles or along the rib cage.

It is when a muscle goes into spasm and refuses to relax. The pain in the affected muscle can range from a slight spasm to agonising pain. It can last a few seconds through to 15 minutes and can recur ...