Rickets, also known as Vitamin D deficiency rickets, is a chronic systemic nutritional disease characterized by bone lesions caused by insufficient Vitamin D in infants, children, or adolescents, leading to disturbances in calcium and phosphorus metabolism. The main features of this disease are incomplete calcification of the long bone epiphyses, cartilage plates, and bone tissue due to Vitamin D deficiency, resulting in incomplete osteogenic calcification. This disease is generally seen in infants under two years of age, particularly common in infants aged 3-18 months. Due to the lack of Vitamin D, the disease can present symptoms such as excessive night sweating, irritability, restlessness, crying, and cradle cap. Therefore, the excessive sweating associated with this disease is mainly caused by a deficiency in Vitamin D.