Food guide pyramid
Food guide pyramid

Pellagra

Definition:
A disease caused by a deficient diet or failure of the body to absorb niacin (one of the B complex vitamins) or an amino acid (tryptophan). Common in certain parts of the world (in people consuming large quantities of corn), the disease is characterized by scaly skin sores, diarrhea, mucosal changes, and mental symptoms (especially a schizophrenia-likedementia). It may develop after gastrointestinal diseases or alcoholism.

Alternative Names:
Vitamin deficiency - niacin; Deficiency - niacin


Review Date: 10/4/2001
Reviewed By: Victoria Kennedy, RN, A.D.A.M. editorial.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is the first of its kind, requiring compliance with 53 standards of quality and accountability, verified by independent audit. A.D.A.M. is among the first to achieve this important distinction for online health information and services. A.D.A.M. is also a founding member of Hi-Ethics (www.hiethics.com) and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2003 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.