Rickets, also known as vitamin D deficiency rickets, is a chronic nutritional disease characterized by skeletal lesions, caused by insufficient vitamin D in children, leading to disturbances in calcium and phosphorus metabolism. The typical manifestation of rickets is incomplete mineralization of the growing long bone epiphyses and bone tissue, presenting as bone softening or deformity. Once rickets is diagnosed, it must be treated aggressively. First, children are given high doses of vitamin D, either orally or through intramuscular injection, with a common practice of administering a single dose of 300,000 units of vitamin D intramuscularly. A month later, a blood sample is taken to measure the vitamin D content; if it is below normal, treatment must continue; if it is within the normal range, it is only necessary to supplement the daily physiological requirement of vitamin D for the child. (Specific medication should be administered under the guidance of a physician.)