Hi, I have been prescribed Citistar 500 mg to be taken once in night for 30 days. I had no symptoms or any sickness, I had accompanied my mother for her check up with the neurologist, when from a random talk the doctor noticed a very very mild tremor in my left hand (when stretched and held), he did another test where he used a small vibrating stick and made me tell the difference in sensations between 2 specific points, from all the points the sensation in the forehead area were milder (some times no vibration felt at all) compared to the rest of the face. Based on this he prescribed me citistar. I would like to know the diagnosis of this condition.