[Skin changes and anorexia nervosa].

Anorexia nervosa (AN) is one of the most dangerous psychiatric diseases; it bears a poor prognosis, marked addictive potential and a high risk of suicide. The earlier the eating disorder is diagnosed and treated, the better the prognosis of AN. A number of dermatological conditions may be associated with AN, although none are specific for AN. These findings include xerosis cutis, effluvium, gingivitis, cheilitis, acne and nail lesions. The cutaneous findings often observed in AN may be localized to the hands ("anorectic hand"), which should therefore always be examined if AN is suspected. The diagnosis of AN can thus be facilitated by knowledge of the cutaneous manifestations, which are generally plain to see. If AN is strongly suspected, the patient should be encouraged to consult a psychiatrist/psychotherapist.