There are few danger signs post
head injury which parents need to watch for, to take children to emergency room for further management:
(these are the children who would need a CT head scan within 1 hour of the risk factor being identified:)
1.
loss of consciousness after the episode and persistent vomiting after the impact.
2.Post-traumatic fits but no history of
epilepsy.
3.On initial emergency department assessment, GCS less than 14, or for children under 1 year GCS (paediatric) less than 15.(GCS means scoring for consciousness with maximum being 15 and for parents symptoms will appear like excessive sleepiness at home in unsual hours)
4.Suspected open or
depressed skull fracture or tense fontanelle, detected by experts at emergency.
5.Any sign of
basal skull fracture (haemotympanum, 'panda' eyes, ,translucent fluid /blood leakage from the ear or nose, Battle's sign).
6.Focal neurological deficit(not able to move one of the limbs/affected speech/vision)
7.For children under 1 year, presence of bruise, swelling or laceration of more than 5 cm on the head.
As a precaution,because your child is less than 1 year,it is advisable to go to emergency be seen once by a emergency physician first.
Hope this helps.