My brother is having behavioural issues. He started developing following symptom when he was 6-7 year old 1) Irritable (Chidchida) 2) Improper behaviour with relatives He is an engineer and was an average student through out the academics. He inherited these symptoms from my father. He has not completely developed the thinking ability and he is a slow learner. Due to all these, he usually suffer to sustain his job and often humiliated by relatives/employer. He is 32 year old and single.