How to determine if a baby has rickets

Written by Tong Peng
Pediatrics
Updated on May 21, 2025
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The diagnosis of rickets in infants should rely on the level of 25-hydroxyvitamin D3 in the blood and the examination of the long bones through X-rays imaging, rather than early symptoms. However, due to the young age of infants, it is recommended to supplement vitamin D within two weeks after birth. If the supplementation is not timely, some early clinical manifestations may appear occasionally, such as brachycephaly, bowed legs, and pigeon chest in infants. Additionally, there may be abnormalities in the nervous system, such as unstable sleep, easily startled and crying, and increased excitability. Therefore, it is necessary to identify the condition through the aforementioned tests and then proceed with symptomatic treatment.

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Written by Yao Li Qin
Pediatrics
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How is rickets treated with injections?

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.)

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Written by Tong Peng
Pediatrics
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Can people with rickets swim?

Rickets is a metabolic disease caused by a deficiency in vitamin D, and its clinical manifestations primarily include symptoms in infants such as a square skull, night sweats, pigeon chest, eversion of the rib cage, as well as bowlegs or knock-knees. Severe cases can lead to skeletal deformities in the chest and developmental disorders. Therefore, for the treatment of children with rickets, it is necessary to intake vitamin D and calcium to promote bone development. Swimming is also a form of exercise that can enhance the absorption of calcium by the bones, which can help prevent the progression of rickets. It is also important to engage in outdoor activities and expose to sunlight, as vitamin D can be synthesized through sun exposure, effectively supplementing it. If a child's symptoms of rickets are relatively severe, it is advisable to take the child to a specialist hospital for a 25-hydroxy vitamin D test and supplement vitamin D based on the specific results.

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Written by Li Jiao Yan
Neonatology
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Can rickets be treated?

Rickets is a disorder caused by a deficiency of vitamin D, leading to impaired calcium and phosphorus absorption, which then results in abnormal skeletal development. It is a chronic nutritional disease. Generally, the rickets commonly mentioned is due to nutritional vitamin D deficiency, which is treatable. Typically, encouraging children to engage in appropriate physical activities while supplementing with an adequate level of vitamin D can effectively control the disease, and it can even be cured. However, if there are special circumstances, such as significant liver abnormalities, renal function abnormalities, renal failure, or abnormalities in the thyroid or parathyroid glands, including parathyroid tumors, or congenital hereditary diseases, the treatment needs to be based on the cause in order to effectively control the disease and promote normal calcium and phosphorus metabolism in the body. Congenital hereditary diseases generally make treatment more challenging. Therefore, it is crucial for children with rickets to seek timely medical examination at a hospital. If it is a common case of nutritional vitamin D deficiency, parents should supplement vitamin D promptly according to the doctor's advice for treatment.

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Written by Tong Peng
Pediatrics
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Should I take vitamin D or D3 for rickets?

Rickets should be treated with D3, but strictly speaking, what we commonly refer to as vitamin D is D3, just phrased differently. Vitamin D3 helps promote the absorption of calcium by bones, preventing the occurrence of rickets symptoms. The main clinical manifestations of rickets appear in the deformation of bones, such as square skull, pigeon chest, flaring ribs, X-shaped legs, O-shaped legs, and other changes in bone status. The nervous system can show symptoms such as night sweats, nervous excitability, balding at the back of the head, poor sleep quality, and easiness to cry. For rickets, it is necessary to diagnose early, timely supplement with vitamin D to prevent symptoms from worsening, and also to get more sunlight and engage in outdoor activities, which helps the body synthesize vitamin D and absorb calcium.

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Written by Yao Li Qin
Pediatrics
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Clinical manifestations of rickets

Rickets, also known as vitamin D deficiency rickets, occurs because children do not supplement vitamin D in a timely manner after birth, leading to a deficiency of vitamin D in the body and resulting in a nutritional metabolic disease primarily involving skeletal changes. In the early stages, children mainly show symptoms related to mental and emotional state, such as irritability, crying, excessive sweating, shaking their heads back and forth, and rubbing their heads. Subsequently, symptoms like bald patches on the back of the head and softening of the skull bones may appear. As children grow, they may develop conditions such as a square-shaped skull, beaded ribs, pigeon chest, funnel chest, and bracelet-like deformities around the wrists and ankles. In severe cases, children may later develop X-shaped legs and O-shaped legs. If rickets is suspected, it is crucial to promptly conduct a blood test to measure the vitamin D level. If the level is below normal, it is essential to actively treat the diagnosed rickets.