You sound like a Doctor, which means you know NOTHING about Psorisis. 20 years under the care of a dermatologist (the best in town) only to get high levels of cortizone pumped into my body. Temporary, result then would come back worse! Psoriasis is caused by ADRENAL EXHAUSTION.Excessive stress in body. Can be caused by bad food, mental stress any kind of stress. Balance is the only cure. for the body and mind or both! Meditation, exercise, clean eating, balance your body is the only way. Some education for you Doc!