What would you call this problem......?

I will like to tell you that this is a very good guy in every sense but only one BIG PROBLEM, he got to take anger management or see a physiologist to help him with this problem, I don't doubt that he is a young guy but besides this point, have you taught to be with him one day hi may do some thing crazy or perhaps do it to you either way you can be in treble,this guy have to realize he need to to get help this is not normal! in fact is a very serious potential problem to grow!!!