It is interesting that you also have Parkinson's. My mother and both of her siblings have Parkinson's and this is the side of the family that also have the tremors. We have been told they are unrelated but I am not sure that I believe this. My mother died from complications from Parkinson's. Her brothers are in their 80's. We have tremors in family members who are about the ages of 17, 22, 40, 50, 75 and 80. It gets progressively worse as people age and doctors reassure us that it is not Parkinson's. Around age 70 they decide that the family member has both types of tremors. All of our family members have remained high functioning until late 70's and are actually very active. We do have some difficulty with writing, typing and other fine motor tasks even in our teens.