C.P.
Hello F.,
Oh dear, could he be eating something that affects him like that? I'm saying that because of my son. His body cannot tolerate high fructose corn syrup. the slightes thing would sent him over the edge and it would be 20 - 30 minutes of crying, ranting, complainting, etc. it could be bath time, it could be the rain, it could be the sunshine... it took me a very long time to figure it out and to this day I have not found anybody else that has that reaction. check breakfast cereal, juices, cookies, bread, crackers, etc.
If I remember correctly, one of oprah's shows they had a boy that was allergic to chocolate. they showed a video after giving him some miniscule amount of chocolate and that sweet boy was like a raging maniac. Then they have him the antidote and he was back to normal like turning the light switch. Good luck, keep looking and follow your gut instinct! ~C.~