佝偻病是婴幼儿期常见的一种慢性营养缺乏症,由于维生素D不足,而使钙磷代谢失常,骨貭钙盐沉着减少,首先引起骨骼发育障碍,同时大脑皮层因受维生素D及血清钙磷减低的影响,对全身调节机能减弱,皮层下部新陈代谢中枢亦可发生机能障碍,因而影响全身代谢作用,机体抵抗力降低,易于并发呼吸道或消化道疾病,影响小儿健 Rickets is a common chronic nutritional deficiency in infants and young children. Due to insufficient vitamin D, calcium and phosphorus metabolism is abnormal, and calcium deficiency of bone calcium is decreased. First, bone development disorders are caused. At the same time, cerebral cortex is affected by vitamin D and serum calcium and phosphorus Reduce the impact on the body to regulate the weakening of the lower cortical metabolic center may also occur dysfunction, thus affecting the body’s metabolism, reduce body resistance, easy to concurrent respiratory or gastrointestinal diseases, affecting children’s health