Have you tried hypnosis? I've suffered from face psoriasis for years. Tried every treatment, every ointment, everything I could think of. It frustrated me that my brain was sending signals to over-produce skin cells on my face.
The trick with hypnosis is that you have to be willing to suspend your disbelief with it. If you go in thinking this is B.S. and that you can't be hypnotized, it will not be effective.
I played along and did my best to truly visualize and imagine what I was told to imagine, and within 2 weeks my psoriasis cleared and has not come back in years. Have not continued with hypnosis either. All prescription medication was short-term. Hypnosis has given me the only lasting relief.