hi rajeev,many people have tremor in there hands not always parkinson.Theres many other symptoms to look for.usually parkinson starts on one side at a time,your knee or elbow will have pain.Your affected arm usually wont "swing" when you walk.Youll find yourself more "tounge tied".You will probably have depression ,anxiety,and find yourself forgetful.I also have restless limbs and poor sese of smell,plus you will feel off balanced.I hope this helps anybody reading,Im not a doctor but read alot since my father had it and I also do.