Tardive dyskinesia is a movement disorder that causes repetitive, involuntary movements in the face, neck, arms, and legs. The condition is a side effect of certain medications. Symptoms can improve ...

Chorea and hemiballismus are both forms of involuntary movement disorders. Hemiballismus can cause sudden, violent, and flinging motions. Chorea can cause irregular, spontaneous, and nonrepetitive ...

Involuntary head twitching can stem from various movement disorders, including neck spasms, Tourette syndrome, and Parkinson’s disease, necessitating a doctor’s evaluation for proper diagnosis and a ...

Smooth movements require coordinated control of muscles. Even a simple reaching movement involves coordinated movements of his/her shoulder, arm, wrist and fingers, which are controlled by temporally ...