It’s good that primary care physicians can take samples to see if there’s any other cause of muscle cramps and pain. In Parkinson’s, muscle cramps aren’t uncommon in the early mornings, but it’s most commonly a body part, usually the lower leg or foot, that is affected. For Parkinson’s cramps, you can try adding a longer-acting medication, such as a dopaminogonist, at night or in a depot form.