What causes autism, is there any good treatment

Condition analysis:
Infantile autism: (Also called autism.) A spectrum of neuropsychiatric disorders characterized by deficits in social interaction and communication, and unusual and repetitive behavior. Some, but not all, people with autism are non-verbal.

Autism is normally diagnosed before age six and may be diagnosed in infancy in some cases. The degree of autism varies from mild to severe in different children. Severely afflicted patients can appear profoundly retarded.

Instructions:
Treatments and Outlook: There is no cure for ASDs. The most effective treatments involve early and intensive behavioral interventions. It is generally agreed that the earlier a child is enrolled in these programs, the better their outlook will be.

Since conventional medicine has not found a cure for ASDs, patients and their advocates have sought alternatives, including:
high dose vitamins
chelation therapy
hyperbaric oxygen

There is currently no evidence that these treatments are effective. Parents should weigh the research and financial costs before investing in any of these therapies for their children.