What the best treatment for autoimmun deseas like ichtyosis or psoriasis?

See below: Psoriasis: topicals, phototherapy and systemics like biologic response modifier enbrel (etanercept). Ichthyosis is an autosomal dominantly inherited condition. Treatment includes: prescribing specialized creams or ointments to help moisturize the skin, get rid of dead skin and help control inflammation and itching. Ingredients: Lactic Acid or other Alpha hydroxy acids and retinoids.