Is slight swelling in the anterior fontanel of a child's head after an accidental trauma dangerous?
Does not seem to be a cause for concern
Hello and Welcome to ‘Ask A Doctor’ service.
I have gone carefully through your query and understand your concerns. I do not suppose that the child would not gone into incessant crying if his head was accidentally hit hard, especially if it were hard enough to cause internal bleeding severe enough to make the fontanel bulge. I therefore do not see a cause of concern.
If 'head injury' occurs, it will not be without manifestations. The main concern could be the ominous signs of head injury which are:
* Severe headache as manifested by incessant crying
* Altered consciousness or Loss of consciousness
I assume that none of these have occurred. Unless any of these are present you need not worry. If any of these occur, you would need to get a CT scan of the brain done.
Give Paracetamol or Acetaminophen in case the child is irritable due to pain.
Let me know if I could help further.