What treatment can be done for OCD affected people?
It is not a disorder. Your best bet is, as soon as you can, take him or her to your nearest Church of Scientology.
What you want to do when you guys get to the Church are a Stress Test, and a Personality Test.
These will give them enough information to know where to start, and they will tell him or her the steps he or she needs to take to handle whatever comes up.
They will probably recommend Dianetics counseling. He or she should do it.
Any medical issues like broken bones or pinched nerves, etc., etc.. need to be addressed first.