佝偻病(rickets)为乳、幼儿常见的营养缺乏症,是以新生的骨质内钙盐沉着障碍为主的一种慢性全身性疾病.发生于年龄较大的儿童者则称晚期佝偻病;发生于成年者则称骨软化病.发病机理从病因来分,一类是由于维生素D缺乏所引起(称维生素D缺乏性佝偻病);另一类则由于肾功能受损而引起(称肾性佝偻病),后者在治疗上要提供大剂量维生素D才能奏效,所以又称维生素D抵抗性佝偻病. Rickets are common nutritional deficiencies in milk and young children and are a chronic systemic disease predominantly associated with neonatal intraosseous calcium-based disorders. Occurrence occurs in older rodents with advanced rickets; Adults are called osteomalacia. Pathogenesis from the cause points, one is due to lack of vitamin D caused (called vitamin D deficiency rickets); the other is due to impaired renal function (called renal rickets) , The latter in the treatment of large doses of vitamin D to be effective, it is also known as vitamin D-resistant rickets.