Welcome to HCM
I understand your concern
According to your description, your son may just be suffering from overwhelming emotional anger.
That is all. Don't conclude anything.
He knows wht to do.
If he asks for anger management
training, allow him to get it.
Also consult a yoga
therapist for relaxation techniques
and bipolar disorders are psychic problems which has many symptoms.
Wait and watch.
Wish him a good future.