Chronic constipation is also associated with some neurotransmitter disorders that can predispose people to PD. In my experience, doctors are not able to disting

Chronic constipation is also associated with some neurotransmitter disorders that can predispose people to PD. In my experience, doctors are not able to distinguish between PD that's neurodegenerative or neurometabolic during a consult. In addition, GI issues can also complicate neurometabolic PD/Parkinsonism/etc, and I imagine it's difficult to differentiate the two without a thorough evaluation and genetic testing.