Often beginning before teen years, the symptoms of these problems are frequently mistaken for juvenile delinquency or the turmoil's of growing up. Some common behaviors include stealing, consistent lying, cruelty, deliberate destruction of property, fighting with or without weapons, or even rape. There are many studies into the biological, psychological and sociological causes of conduct disorders, but like many other disorders, conduct disorders are probably caused by a number of factors. Conduct disorders will not go away with age, and therefore treatment is critical. But these behaviors may develop as a result of other problems, like an inability to see or hear adequately, or another physical or emotional illness.
Autistic children fail to develop normal relationships with anyone, including parents.
As infants, they may resist affection or consistently cling to someone. As they grow older, they may not seek comfort if they are hurt, and they generally like to play alone. Autistic children have difficulty communicating because they don't develop language skills. They may not use words correctly, or they may develop a language all their own. Sometimes autistic children go through repetitive body movements.