mayidism
       n : a disease caused by deficiency of niacin or tryptophan (or
           by a defect in the metabolic conversion of tryptophan to
           niacin); characterized by gastrointestinal disturbances
           and erythema and nervous or mental disorders; may be
           caused by malnutrition or alcoholism or other nutritional
           impairments [syn: pellagra, Alpine scurvy, mal de la
           rosa, mal rosso, maidism, Saint Ignatius' itch]