It is rough. Avoidance of irritants is important Especially bedroom. Get good Austin air type filters. . Keep room unscented, Eat cleanly too...no convenience foods. Real fresh or frozen vegetable, fruit, clean fish, lean meat organic if possible. Quinea, buckwheat, amaranth, and rice porridges. Avoid dairy and wheat.
I believe your son has a neurological problem brought on by the concusions. Nothing really helps but time,deep breathing, snd prayer.