The gut and the skin.
D000169:Acrodermatitis / Q000150:complications; D002446:Celiac Disease / Q000175:diagnosis / Q000209:etiology; D003872:Dermatitis / Q000150:complications; D003874:Dermatitis Herpetiformis / Q000150:complications / Q000628:therapy; D004032:Diet; D004485:Eczema / Q000150:complications; D006197:Hair; D006801:Humans; D007057:Ichthyosis / Q000150:complications; D007410:Intestinal Diseases / Q000150:complications*; D007421:Intestine, Small / Q000503:physiopathology*; D009264:Nails, Malformed / Q000150:complications; D010859:Pigmentation Disorders / Q000150:complications; D011565:Psoriasis / Q000150:complications; D011693:Purpura / Q000150:complications; D012393:Rosacea / Q000150:complications; D012871:Skin Diseases / Q000150:complications*