When I was trying to get disability for a particularly bad couple of years of depression, Centrelink (Australian Social Security) arranged an assessment interview with a psychologist from the mental health services.
After I told him about how I felt and about my life he asked me if I believed in Demonic Possession!
He recommended I get out books by this author who writes about demons and demonic influences and that I should read the bible and go to church. Oh, and I shouldn't rule out exorcism as a possible solution.
The one thing he didn't recommend, is that I get any assistance from social security.
There's a BIG difference between a good psychologist/psychiatrist and a total whack job. I'd shop around for someone good.
Wow. That is the most unprofessional behavior I have ever heard of. It's good that you could just shrug that off as quackery. What if someone's mind was in a fragile and vulnerable state and they took that diagnosis to heart. That was an extremely harmful thing to do.
And besides, any good exorcist knows that you do not tell the possessed that they are possessed. You play stupid so the demon doesn't know you're on to them.