Involuntary muscle movements happen when your body moves without you intending it, like with tics or tremors. The causes of involuntary movements can be chronic conditions, nerve damage, drug ...

Discover the causes of infantile spasms, including genetic and brain-related factors, and learn how West syndrome affects ...

Dear Dr. Gott: Once in a while, my body will "jerk" involuntarily as I fall asleep. What causes this? Does it mean I have a heart condition or other problem? Dear Reader: You appear to be describing a ...