Autism Spectrum Disorder is a neurological condition that affects brain development, leading to challenges in social interaction, communication, and behavior. It includes various subtypes, each with unique characteristics.
Types of Autism
1. Asperger’s Syndrome
Previously considered separate from autism, Asperger’s Syndrome shared similarities but lacked significant language or cognitive development delays. Individuals with Asperger’s often had difficulty with social interactions but exhibited strong verbal skills.
2. Kanner’s Syndrome
Also called “infantile autism,” this condition was first identified by Leo Kanner. It is characterized by early-onset symptoms such as impaired socialization, repetitive behaviors, delayed speech, and strong attachments to objects.
3. Rett Syndrome
Primarily affecting girls, Rett Syndrome is a neurodevelopmental disorder with symptoms similar to autism in early childhood. It progresses through four stages and includes symptoms such as:
Slowed head growth
Muscle weakness
Abnormal breathing patterns
Repetitive hand movements
Seizures
4. Childhood Disintegrative Disorder (CDD)
A rare and severe form of autism spectrum disorder, CDD affects about 17 in 100,000 children. It leads to a sudden loss of motor, play, self-care, social, and language skills after a period of typical development.
5. Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS)
This former classification included individuals with symptoms of autism spectrum disorder who didn’t fully meet criteria for other subtypes. Symptoms included difficulties in communication, social interaction, and repetitive behaviors.
Causes of Autism

Autism may develop due to a combination of:
Genetic factors
Environmental influences
Brain development issues
Premature birth
Signs and Symptoms of Autism

Common signs include:
Delayed speech development
Lack of eye contact
Unusual interests
Repetitive behaviors (e.g., toe-walking, jumping)
Hyperactivity
Depression
Therapies for Autism

Treatment focuses on improving communication, social skills, and daily functioning through:
Applied Behavior Analysis (ABA)
Speech and Language Therapy Occupational Therapy
Social Skills Training
Cognitive Behavioral Therapy (BT)
Sensory Integration Therapy
Parent Training and Support
1. What are the main types of Autism Spectrum Disorder ?
The main types include Asperger’s Syndrome, Kanner’s Syndrome, Rett Syndrome, Childhood Disintegrative Disorder (CDD), and Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS).
2. What are some common symptoms of autism?
Symptoms include delayed speech development, lack of eye contact, unusual interests, repetitive behaviors, hyperactivity, and depression.
3. What therapies are used to treat autism?
Treatment includes Applied Behavior Analysis (ABA), Speech and Language Therapy, Occupational Therapy, Social Skills Training, Cognitive Behavioral Therapy (CBT), Sensory Integration Therapy, and Parent Training and Support.