Symptoms after experiencing force can indicate concussion.
The symptoms of concussion are very variable, and they can include loss of consciousness, temporary memory loss, headache, blurred vision, nausea, vomiting, and dizziness. Severe concussions can even result in seizures.
Physicians will also perform a baseline neurological test to determine baseline neurologic and reaction capabilities, and if they suspect concussion, they will repeat the same neurological test.