Symptoms of cocaine overdose may include some or all of the following: Dangerous or fatal rise in body temperature ; Seizures Heart attack ; Brain hemorrhage.....
I'm really scared that it'll kill him one day as it's horrible to see him like that, he's been getting nosebleeds too and when he burns up he feels like he's on fire.
All I can try and do is try and cool him down with a fan and cold towel and massage his temples and such.