It's a mood disorder.. or may be anger issue ..yes there are medicine available tht make him cool and calm ..apart from tht we need to focus on root cause so it's better u elaborate more history here like which instance he aggrevated more ..

It needs consultation for detailed evaluation with a psychiatrist and then further management

Needs a detailed evaluation.

A detailed medical and psychiatric history is always needed for every patient. In addition, a detailed mental status examination is also recommended for every patient to make a diagnosis and management of the case accordingly. At the age of your father, not only psychiatric disorders are to be ruled out but also some medical illnesses are also to be ruled out. In addition a detailed history and evaluation is also needed. Do take the help of a mental health professional.Any treatment is to be taken under the supervision of a mental health with a diagnosis.

First a detailed history is necessary so that we will got to know about the reasons of his aggression followed by Anger management which can be done by a Clinical Psychologist.