title: Early signs of niacin deficiency.
mesh_terms: D005128:Eye Diseases / Q000150:complications; D005260:Female; D005882:Gingival Diseases / Q000150:complications; D006801:Humans; D008047:Lip Diseases / Q000150:complications; D008297:Male; D009536:Niacinamide / Q000031:analogs & derivatives / Q000652:urine; D009539:Nicotinic Acids / Q000172:deficiency*; D010383:Pellagra / Q000453:epidemiology; D012256:Riboflavin / Q000652:urine; D012871:Skin Diseases / Q000150:complications; D013831:Thiamine / Q000652:urine; D014060:Tongue Diseases / Q000150:complications; D014804:Vitamin B Deficiency / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology; D014977:Xanthurenates / Q000652:urine; D015022:Yugoslavia
chemical_list: D009539:Nicotinic Acids; D014977:Xanthurenates; D009536:Niacinamide; D012256:Riboflavin; D013831:Thiamine