OCD need not stem from a serious unconscious psychological problem; in fact, OCD is a serious psychological problem on its own.
There are numerous theories as to why OCD develops, some with more merit than others, but the idea that someone is manifesting OCD symptoms as a result of a serious unconscious problem is very much “old school” psychology. Explanations such as conflict with your mother while toilet training or secretly lusting after her are outdated.
Although there may still be a few therapists who believe that these reasons are valid, the majority of people in the field will say that the current cognitive, behavioral, or neurochemical theories are far better at explaining OCD.
The therapies being used today are based on these newer theories and have brought about great relief of OCD symptoms.