What Causes Involuntary Movements In Arms, Legs And Shoulders?

Hi, may I answer your health queries right now ? Please type your query here...I have been experiencing involuntary movements, off and on of my legs, arms, shoulders, head for the last three weeks. Never had this problem before. Had syncopal episode X2. I was hospitalized last weekend, head MRI with contrast and EEG were normal. Discharged with no definitive diagnosis. Was at it's worse right before the admission. After the worst episode, I felt pretty out of it. No new meds introduced before this started Doctors didn't change any of my meds. Still having the involuntary movements off and on. Driving privileges taken away. Any ideas?