Stimulated, I don't know anyone, sometimes it's good and sometimes it's bad, hitting people and swearing. Ask an expert.

Judging from the information you provided, there are symptoms of emotional instability, uncontrolled behavior and violent tendencies. If you enter this state for no reason, you have obvious neurotic characteristics. Need to get employment in time and get medical treatment.

However, if these behaviors are caused by external stimuli, such as the words of family members, or the previous specific events have not been resolved, and the effect of simple drug intervention is not obvious, talk psychotherapy is needed.

From my personal judgment, it is possible to belong to the latter, and the whole process has a cycle of "venting-attacking-blaming-regretting". May have a deep psychological complex.

It is suggested that he talk to a psychologist and have a clear and definite judgment.