The minor claimant sought a catastrophic impairment determination following an accident in which he sustained a concussion and developed behavioural disorders, including post-traumatic stress disorder and obsessive-compulsive disorder. Adjudicator Daoud found that the claimant suffered a Class 4 Marked Impairment in adaptation as a result of his injuries. She accepted the evidence of the claimant’s special education teacher and the claimant’s neuropsychologist.