Now days various types of mental illness is seen in children which stays up to their teenage. Children having this illness are deficient in brain development. Their brain doesn’t get developed according to their age due to which they doesn’t become conversant in performing all normal activities that other children do without any problem. They become reserved and do not pay active role in social gathering as well as activities such as playing, studying, and interacting with others. This illness is high in boys as compare to girls.