A disease caused by a deficiency of niacin and protein in the diet and characterized by skin eruptions,digestive and nervous system disturbances,and eventual mental deterioration.

• 糙皮病一种由于食用缺乏烟碱酸和蛋白质的食物而引起的疾病，症状为皮肤出疹子、消化和神经系统紊乱及最终心智退化。