No. I don't have any info on whether Parkinson's diesease is heriditary or not. However, the relative who may be developing Parkinson had a sister who had Parkinson. I don't believe any of the other family members have the disease. The relative in question has been to two doctors, one who diagnosed the problem as Parkinson (without doing any tests), and a second who diagnosed the problem as not Parkinson (who did minimal tests).