What is the reason for the sunken fontanelle in a five-month-old baby after a fever?

Patient's question:

Doctor, hello: The baby is five and a half months old. A few days ago, she had a cold and fever. On the 21st, her fever broke and she was found to have a sunken fontanelle (before the fever, the fontanelle was also sunken, but the surrounding area felt very flat. However, now the surrounding area is a bit high. What is the matter?
Treatment history and effectiveness: During the high fever stage, she had blood tests at the hospital and was told it was a viral fever. She took medicine to reduce the fever. What kind of help do you need?

Doctor's answer:

The condition you described, where the anterior fontanelle is sunken, is most commonly seen in cases of dehydration in children or symptoms of brain atrophy caused by post-encephalitis.
Recommendation: It is advised to visit a hospital for thorough examination and diagnosis, followed by appropriate treatment. Drinking more water regularly is also recommended to prevent fever.
The above is the advice for the question "Why is the anterior fontanelle sunken after a five-month-old baby has a fever?" I hope it helps. Wishing you good health!

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