Autism is a developmental disability that appears during the first three years of life.This is a neurological disorder that affects the functioning of the brain.Autism happens four times in boys than in girls.Autism does not occur due to racial ,ethnic or social cause.It does not occur also due to family income,lifestyle and educational level. In every 500 individuals one can be affected with autism.Autism affects the brain in the areas of social interection,,communication skills.This disorder makes them hard to relate to the outside world and to communicate with others.Autistic individual may be aggressive or self injurious sometimes.They can show repeated movement of body such as hand flapping or rocking.They often shows unusual response to people and attachment to objects and resistant to change in routines.