One of most common skin conditions treated by Chinese medicine is Psoriasis, one of the scaling disorders. This can range from lots of small spots spread over the body as in guttate psoriasis, to localized thickened round, well demarcated scaly plaques as in plaque psoriasis or psoriasis vulgaris or itchy crusting, thickened skin with small pustules called pustular psoriasis.
Psoriasis is an unusual condition that can just come and go of its own accord and does not seem to be linked to allergies. It is classified as one of the autoimmune diseases and at its worst stages can lead to psoriatic arthritis (pain and thickening in the joints) and psoriatic nails, with thickened, flaking, yellow nails which are different from fungal nail infection.
Again, the art of the Chinese herbalist is to diagnose and distinguish between the different forms of psoriasis (and other skin conditions), using Chinese medicine differentiation to find the most appropriate herbal formulas to treat the condition. Often the formula has to change and adapt as the condition changes with treatment. Acupuncture plays a role in treating the pain and immobility of Psoriatic arthritis.