Autism spectrum disorder (ASD) is a neurodevelopmental disorder that affects communication, social interaction and behavior. ASD is called a “spectrum” disorder because it affects individuals differently and to varying degrees of severity. Here are some of the different types of autism:

Classic Autism: Also known as Kanner's Autism, named after the psychiatrist who first described it, this is the most well-known type of autism. Children with classic autism tend to have difficulty in social interactions, communication, and may exhibit repetitive behaviors.

Asperger’s Syndrome: Amy Pfeffer Orchard Park explained that people with Asperger’s syndrome often have average or above-average intelligence, but experience difficulties with social communication, nonverbal cues and may engage in repetitive behaviors or routines.

Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS): This term is used to describe children who display some, but not all, of the symptoms of autism. These children often have delays in language development, social interactions, and show repetitive behaviors.

Rett Syndrome: This is a genetic disorder that primarily affects girls. It is caused by a mutation in the MECP2 gene and can lead to seizures, breathing problems, scoliosis, and difficulty walking.

Childhood Disintegrative Disorder (CDD): This is a rare form of autism. Children with CDD typically develop normally until around 2-4 years of age but then experience a sudden regression in their developmental milestones which may include loss of speech, motor skills, and bowel/bladder control.

As an umbrella term, ASD includes many other conditions that share similar characteristics, such as Fragile X Syndrome, Angelman Syndrome, and Prader-Willi Syndrome. Each type of autism has its unique set of challenges and strengths.

Early diagnosis and intervention are crucial for individuals with autism regardless of the type they have. With the right support and therapy, children with autism can learn to communicate effectively, develop social skills and lead fulfilling lives. It is important to remember that individuals with autism are not defined by their diagnosis, but are unique individuals with a range of abilities and strengths.