Autism Spectrum Disorder (ASD)

Autism spectrum disorder (ASD) is a neurodevelopmental condition characterized by differences in social communication, restricted or repetitive behaviors, and varied sensory experiences. Each person's profile is unique — autism is a spectrum, not a single presentation.

Table of Contents

Quick Facts

  • ICD-10: F84.0
  • Prevalence: ~1 in 36 children (US)
  • Lifelong: Yes — neurodevelopmental

Overview

ASD is described as a 'spectrum' because the strengths and challenges vary widely from person to person. Many autistic people thrive with appropriate support, accommodations, and understanding. Modern approaches focus on supporting communication, independence, and quality of life rather than 'fixing' autistic traits.

Common Features

Social communication

  • Differences in eye contact, body language, or facial expression use
  • Difficulty understanding social cues or non-literal language
  • Preference for one-on-one over group interaction

Behavior and interests

  • Intense focus on specific interests
  • Need for routine and predictability
  • Repetitive movements (stimming)

Sensory

  • Heightened or reduced response to sounds, lights, textures, tastes, or smells

Diagnosis

  • Developmental screening by primary care
  • Comprehensive evaluation by specialists (developmental pediatrician, psychologist, child psychiatrist)
  • Standardized tools (ADOS-2, ADI-R)
  • Hearing and other assessments to rule out alternative causes

Support and Treatment

There is no single treatment for ASD. Support is individualized and may include:

  • Speech and language therapy
  • Occupational therapy
  • Behavioral interventions
  • Educational accommodations
  • Social skills support
  • Treatment of co-occurring conditions (ADHD, anxiety, sleep, epilepsy)

When to Seek Evaluation

Discuss a developmental evaluation if you notice differences in social communication, repetitive behaviors, sensory differences, or developmental delays. Early support can be valuable, but identification at any age is helpful.

Related Conditions

ADHD

Often co-occurs

 Anxiety

Common co-occurring condition

 Intellectual Disability

May co-occur

Frequently Asked Questions

Can adults be diagnosed with autism?

Yes — many people are now diagnosed in adulthood, often after years of unrecognized differences. Identification can help with self-understanding and access to supports.

Is autism caused by vaccines?

No. Extensive research has found no link between vaccines and autism. This claim is firmly debunked.

Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. If you are experiencing a medical emergency, call your local emergency number immediately.

References

  • Centers for Disease Control and Prevention. Autism Spectrum Disorder Information.
  • American Academy of Pediatrics. Autism Resources for Families.