烟酸缺乏症又称“糙皮病”或“陪拉格”,是一种营养不良性疾病。它通常是由于食物中缺乏烟酸或色氨酸所致。主要临床表现为腹泻、皮炎及精神障碍。由于精神障碍表现突出,医务人员往往偏重于当时的精神症状而忽视皮炎和腹泻,因而极易误诊误 Nicotinic acid deficiency, also known as “pellagra” or “Lala”, is a malnourished disease. It is usually due to the lack of niacin or tryptophan in the food. The main clinical manifestations of diarrhea, dermatitis and mental disorders. Due to the outstanding performance of mental disorders, medical personnel tend to focus on the current mental symptoms and ignore dermatitis and diarrhea, which is extremely easy to misdiagnose