Source : WordNet®

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}]