Autism, or autism spectrum disorder (ASD), refers to a broad range of conditions characterized by challenges with social skills, repetitive behaviors, speech and nonverbal communication. According to the Centers for Disease Control, autism affects an estimated 1 in 36 children and 1 in 45 adults in the United States today.

We know that there is not one type of autism, but many.

Autism looks different for everyone, and each person with autism has a distinct set of strengths and challenges. Some autistic people can speak, while others are nonverbal or minimally verbal and communicate in other ways. Some have intellectual disabilities, while some do not. Some require significant support in their daily lives, while others need less support and, in some cases, live entirely independently.

On average, autism is diagnosed around age 5 in the U.S., with signs appearing by age 2 or 3. Current diagnostic guidelines in the DSM-5-TR break down the ASD diagnosis into three levels based on the amount of support a person might need: level 1, level 2, and level 3.

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Autism is a lifelong condition, and an autistic person’s needs, strengths and challenges may change over time. As they transition through life stages, they may need different types of support and accommodations. Early intervention and therapies can make a big difference in a person’s skills and outcomes later in life.