Hi Mizzy,
I'm not a professional, so take this with a grain of salt.
I believe that hallucinations can occur from anxiety, and OCD is a condition placed under the anxiety "heading". I do not have OCD nor am I scheziphrenic, but I can have both auditory and visual hallucinations when the stress level gets a little too high for me. I have social anxiety and PTSD.
Anxiety is not our friend, is it?
Hugs,
Sandy