162 cases of psoriasis

mainly of blood - heat and blood -dryness types

complicated with wind

dampness

blood -stasis and kidney deficiency

were treated with ZBS as basic recipe with modifications. The cured rate was 46%

with a total effective rate of 89%. It was claimed that psoriasis is caused mostly by deficient liver - yin and exuberant liver -yang. Patients with punctata type lesion are mostly complicated with superficies syndrome and excessiveness of the lung; while those with plaque lesions

complicated with wind - dryness and blood stasis: and those arthropathic type patients

with kidney deficiency: erythema type patients

with drug poisoning.