• A disease caused by a deficiency of thiamine (vitamin B1) and characterized by polyneuritis, cardiac pathology, and edema. The epidemic form is found primarily in areas in which white (polished) rice is the staple food, as in Japan, China, the Philippines, India, and other countries of southeast Asia. (Dorland, 27th ed)
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2025
• A nervous system or heart disorder caused by lack of the vitamin thiamine (B1).
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• (vitamin b1 deficiency) Abnormally low concentrations of vitamin B1 in the blood.
  NCI
  U.S. National Cancer Institute, 2021
• Beriberi is a condition that occurs in people who are deficient in thiamine (vitamin B1). There are two major types of beriberi: wet beriberi which affects the cardiovascular system and dry beriberi which affects the nervous system. People with wet beriberi may experience increased heart rate, shortness of breath, and swelling of the...
  NIH Genetic and Rare Diseases
  National Center for Advancing Translational Sciences
• Beriberi, nutritional disorder caused by a deficiency of thiamin (vitamin B1) and characterized by impairment of the nerves and heart. General symptoms include loss of appetite and overall lassitude, digestive irregularities, and a feeling of numbness and weakness in the limbs and extremities. (The...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2025