Since the cause of autism is not known, autism cannot be prevented. Early recognition and treatment may decrease the effects of autism.
Long-term effects of autism depend on how severe the symptoms are. Long-term effects also depend on how soon a person starts treatment. The symptoms of autism may last a lifetime. But it can often be improved with careful intervention and treatment.
An individual with autism may develop seizure disorders and depression.
Autism is not catching. It is not yet clear if some causes of autism are genetic. Genetic counseling may be helpful if a couple has a family history of autism.