Trauma Cause(s) In most cases, an injury to the top of the skull Symptoms Loss of consciousness, irritability, seizure, pain, numbness, headache, dizziness, disorientation, amnesia
[house.wikia.com]
[…] injury Loss of consciousness or fluctuating levels of consciousness Irritability Seizures Pain Numbness Headache (either constant or fluctuating) Dizziness Disorientation Amnesia
[neurolaw.com]
This period will approximate the duration of posttraumatic amnesia.
[doi.org]