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How common is autism spectrum disorder (ASD)?

According to the U.S. Centers for Disease Control and Prevention (CDC), the incidence of autism spectrum disorder (ASD) is one in 68. The prevalence is five times higher in boys than in girls and can occur in any ethnic or racial population.

Autism spectrum disorders are diagnosed in approximately 1 in 150 people. In addition, the numbers of diagnosed cases is on the rise. This might be because the disorders are becoming more common, because diagnostic criteria have changed over time, because reporting methods have changed, or a combination of factors.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.