Schizophrenia, bipolar disorder, OCD etc., can be a result of Astral Attachment. When another disembodied soul hovering around gets attached to a living person, then there will definitely be an impact on the living person. His/her habits, manners, behaviours might change. Unusually the person might get charged with anger, emotions etc.,
Such symptoms are medically classified as a mental disorder however it can be due to an Astral Attachment.
For more details check out Astral Attachments