what parts of the body does ocd affect
Â· just now. Report Abuse. The central nervous system is the part of the body that is affected by OCD. Possibly the hands also if the person is a compulsive hand washer, and the hair, eyelashes, and skin if the person is a compulsive hair puller or skin picker.est Answer: I believe OCD is for the most part a way of warding off anxiety. In your case, I can't say is it is from an organic or environmental source. You have to be the one to search for that answer. It does start from the brain. It's how we percieve things or situations. There is help, however.