Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs BeriberiUpdated: 2017-06-13OverviewBeriberi, or thiamin deficiency, is usually caused by poor diet or alcoholism. SymptomsSymptoms include appetite loss, constipation, confusion, weakness, arm or leg pain, shortness of breath, and swollen feet or legs. TreatmentsTreatments include B-1 supplements and eating more B-1-rich foods, such as whole-grain cereals, beans, and beef. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use