saint ignatius' itch Meaning, Definition & Usage

  1. noun 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
    mal rosso; Alpine scurvy; pellagra; mayidism; maidism; mal de la rosa.

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