Thanks Chemar,

genienini,

Welcome to NeuroTalk. Your grandson's experience is not uncommon. The tests and imaging rule out serious damage but do not rule out the damage caused by a concussion. At his age, concussions can take longer to heal but often eventually heal better. He needs to take every step to avoid another concussion, especially as his brain enters a serious maturing period (puberty).

His behavioral outbursts are not uncommon. I suffered a bad concussion at the same age and my personality changed from a 'sweat little boy' to argumentative and depressed. You should help those around him know this is related to his injury and not an expression of him becoming a bad person. He may need some counseling help to learn skills to reduce his outbursts.

At his age, I believe he is very frustrated internally. I sure was. The mental confusion that can result from a concussion can be frustrating. If he says he does not understand something or has similar complaints, please take them seriously. The worst part about having concussion struggles is when others refuse to believe or accept them.

He likely struggles with over-stimulation. Reducing audio and visual stimulation may help him be settled. Allowing him to remove himself from chaotic situations will be worthwhile.

Please feel free to tell us or ask us anything. There is a wealth of experience here.

My best to you both.