- Worsening headache that won't go away
- Fumbling or stumbling (decreased coordination)
- Nausea and vomiting
- Slurred speech
- Unequal pupils (see image)
- Agitation or restlessness
- Unusual behavior
- Knocked unconscious (always suspect at least a concussion if someone gets knocked out)
Plus for very young kids, besides all the above signs, you should also look for:
- Won't stop crying
- Won't eat or nurse
It doesn't matter if the victim has all these signs and symptoms or just one or two. When in doubt, call 'em out.
Concussions are a big deal. Indeed, having multiple concussions is linked to neurological conditions similar to Parkinson's and Lou Gerig's disease. Despite the danger however, concussions are still considered the mildest form of traumatic brain injury. The biggest problem is telling the difference between a concussion and a more severe traumatic brain injury. Figuring it out requires a CT scan and thorough medical evaluation.
CDC. "Concussion: What are the Signs and Symptoms of Concussion?" CDC. 8 Mar 2010.