Greetings ! I am sorry to learn about your son s situation but it is quite apparent that his recently acquired arrogance and violent streaks come from underlying frustration and agony that he is enduring due to loss of hair in the prime of his youth. You see a young person like him will not take loosing of hair lightly but it will make the same person feel low self esteem and lack of confidence after seeing his deteriorating appearance which any young person like him will like to preserve. So based on the above premise i feel that the tension and aggression that he has been displaying are signs of an impending depression and in order to prevent this depression from becoming full blown i will suggest that he needs to be started on a good anti depressant drug like escitalopram at dose of 10-20 mg / day although zapiz ( i.e is clonazepam) at dose of 0.25 mg twice a day shall be added for 3-4 weeks to calm his nerves and make him relax. So to summarize zapiz 0.25 mg twice a day + escitalopram at dose of 10-20 mg/ day shall be a more formidable drug regime to control his aggression and pain that he is going through owing to his appearance. I hope this helps. Regards