Hi , I have cervical rib. A few years back My left hand fingers were numb but after some exercises it was Ok. Now I have occasional pinky finger tremble ( two or three times a day for about a minute or less) but no numbness or pain. Is it due to again Cervical rib or PD ( Parkinson disease) I am 61 healthy without any Blood Pressure , Or Diabetes problem and absolutely no history of PD in family. I am very active , nice sleep at night , no sleepy sensation in the morning , no urinary inconsistency etc.