My son is 18 years old. He is good in studies scored 95% in his plus two class. Everything is fine but he has one problem he does not mix with anybody. He has no friends. At home he only stick to his room. If not needed he does not talk even with us. We asked him many times but he never tells anything. If we ask more he gets angered. He told me that I love to live alone but I am not afraid of anything. But he even doesn't go to barber shop alone to cut his hair. Should we go to a psychiatrist to counsel him. please tell me I am too much worried.