Deficiency disease A disease caused by deficiency of a particular essential nutrient (such as a MICRONUTRIENT or trace element), usually with a characteristic set of symptoms.

• 营养缺乏病：由于缺乏一种特殊的必要营养物质（微量营养素或微量元素）而导致的疾病，通常表现出具有特征性的一系列症状。