(You know, it kinda feels so stupid when I list off the things I have been diagnosed with, and they're all fairly accurate due to the lines being fairly easy to distinguish: ASD, OCD, Schizophrenia, had Panic Disorder, PTSD, and...GAD. It's joke.)
My OCD is of the basic, get obsession, do compulsion to relieve anxiety of obsession, until said compulsion starts to get more and more frequent and your world starts shrinking and shrinking till you can't leave your bedroom. Good that CBT and exposure therapy works on it, otherwise I reckon it'd be the worst out of the lot by far.