Rickets is a chronic systemic nutritional disease caused by insufficient vitamin D in the body, leading to disturbances in calcium and phosphorus metabolism, characterized by skeletal lesions, typically presenting as incomplete mineralization of the long bones' growth plates and bone tissue. In the early stages of rickets, skeletal development abnormalities are not very obvious. Infants under three months often exhibit signs of increased neural excitability, such as being prone to crying, sweating easily, and potentially frequent head shaking; however, these symptoms are not necessarily specific to rickets. Generally, at this time, there are no obvious abnormalities in skeletal development, and X-rays of the bones are normal. The focus is on vitamin levels, specifically decreased serum 25-hydroxy vitamin D, as well as reduced blood calcium and phosphorus levels. Therefore, early symptoms are not so typical. It is recommended that children regularly visit pediatric clinics for physical examinations to assess their development and, if necessary, undergo trace element and vitamin D level checks.