Patient's question:
Chu, clear and fluent language, normal diet, good deep sleep, normal urination and defecation, normal physical growth and development, normal various exposures, now fontanel size is about 1.51.5MM. Born in June 2008, discovered fontanel in December 2009...Doctor's answer:
Under normal circumstances, the anterior fontanelle of most children closes between one and one and a half years old, and only a very few will close around two and a half years old. If the fontanelle closure is delayed or if it is excessively large, it may also indicate certain diseases.Recommendation: Only by identifying the cause of delayed fontanelle closure can better treatment be provided. Delayed fontanelle closure is commonly seen in the following situations:
1. Rickets caused by vitamin D deficiency often leads to abnormal calcium and phosphorus metabolism and changes in overall bone structure. The changes in the skull are particularly significant. Bone softening often occurs in the center of the occipital and parietal bones. When lightly pressed with a finger, the bone slightly indents inward and immediately springs back, giving a sensation like pressing a ping-pong ball, hence the term "ping-pong head." The forehead and top of the head develop symmetrical bulges in the skull, making the head appear square-shaped. The fontanelle may be too large or may not close until 2-3 years of age, and tooth eruption may also be delayed. (There is a certain relationship with your child's low calcium and low iron levels.)
2. Hydrocephalus, also known as ventricular hydrocephalus. It is unknown whether your child's head circumference is abnormally large, but it is recommended to undergo a cranial CT scan to rule it out.
3. Cretinism, also known as congenital hypothyroidism, is caused by a deficiency in thyroid function. Based on your description, this is not considered a possibility for your child.
It is recommended to identify the underlying cause and provide targeted treatment. Wishing your baby a healthy growth!