A 10-year-old boy had pin-head sized, discrete, yellowish waxy, translucent papules on the face and also, various sized round, circumscribed, erythematous patches with silvery white scales on the trunk. The clinical and histopathologic findgs were compatable with diagnosis of tuberous sclersis associate with psorlasis. There were strong familial history during 3 generation in psoriasis(Fig. 1) Both psoriasis and tuberous sclerosis are heritable skin diseases. Some heritable dermatologic conditions found in tuberous sclerosis including ichthyosis, hypertrichosis and palmar and plantar keratoses but there is no report of tuberous sclerosis associated with psoriasis in published literatures.