A plain-language reference on autism

Autism spectrum disorder (ASD) is a lifelong neurodevelopmental condition characterized by differences in social communication and restricted or repetitive behaviors, with wide variation in how it presents across individuals.

Explains the diversity of autism presentations, the shift away from functioning labels, DSM-5 support levels, and why each autistic individual's experience is unique.

Explores core autism traits (social-communication differences, repetitive behaviors, special interests, sensory processing) and how presentation varies by age, gender, and individual experience.

Explains the multidisciplinary process of autism diagnosis, including screening tools, assessment methods, diagnostic criteria, and the realities of waitlists and late diagnosis.

Current estimates suggest autism affects ~1 in 36 children in the U.S., with rising prevalence driven by broader diagnostic criteria, improved awareness, and better screening—not a true epidemic.

Autism spectrum disorder (ASD) is highly heritable, with complex genetic contributions including polygenic and de novo mutations, alongside gene-environment interactions. Vaccines do not cause autism.

Explores sensory hyper- and hypo-sensitivity, seeking/avoiding behaviors, sensory overload, and practical accommodations for autistic individuals.

Explores the diverse communication profiles in autism, including spoken language, echolalia, AAC, and the importance of respecting all forms of communication while addressing the double empathy problem.

Masking and camouflaging refer to strategies autistic individuals use to hide their traits, often leading to late diagnosis (especially in women) and mental health risks like burnout.

Explores key challenges and opportunities for autistic adults, including employment, healthcare access, independent living, and the underrecognized needs of aging autistic populations.

An evidence-based overview of developmental, behavioral, and educational supports for autistic individuals, emphasizing autonomy, wellbeing, and the evolving debate around intervention approaches.

Explores the neurodiversity paradigm, disability models, language preferences, and how identity framing impacts autistic wellbeing, grounded in current research and autistic perspectives.

ADHD and autism frequently co-occur (AuDHD), sharing overlapping traits like executive dysfunction but differing in social communication patterns. Management requires tailored strategies addressing both conditions.

Anxiety is a common co-occurring condition in autistic individuals, often linked to sensory sensitivities, social challenges, and intolerance of uncertainty. Adapted therapies like autism-modified CBT can help manage symptoms.

Autistic individuals face elevated rates of depression due to social challenges, masking, and burnout, often with atypical presentations requiring adapted care.

Epilepsy co-occurs with autism at higher rates than in the general population, particularly in individuals with intellectual disability. Shared neurobiological mechanisms and bimodal onset (early childhood and adolescence) highlight the need for monitoring and tailored treatment.

Gastrointestinal (GI) issues like constipation, diarrhea, and reflux are significantly more common in autistic individuals, often presenting as behavioral changes in non-speaking people. While the gut-brain connection is actively studied, evidence-based management focuses on symptom relief rather than unproven 'gut cures'.

Sleep disturbances are highly prevalent in autistic individuals, with insomnia, delayed sleep onset, and fragmented sleep being common. These issues are linked to biological differences (e.g., melatonin dysregulation) and behavioral factors, impacting daytime functioning. Management includes behavioral strategies and, in some cases, medical interventions.

Explores the overlap between autism and intellectual disability (ID), including prevalence rates, diagnostic distinctions, and the importance of tailored support that recognizes individual capabilities.

Explores the overlap between obsessive-compulsive disorder (OCD) and autism, including prevalence, distinguishing features, and adapted treatment approaches.

Many autistic individuals experience motor coordination challenges, including dyspraxia (developmental coordination disorder), affecting daily tasks, handwriting, and movement. Occupational therapy and accommodations can help.

PDA is a behavioral profile in autism characterized by extreme anxiety-driven avoidance of everyday demands, requiring low-pressure, collaborative support strategies.

Autistic individuals often experience eating differences, including sensory-driven food selectivity and avoidant/restrictive food intake disorder (ARFID), which can lead to nutritional risks and require supportive, non-coercive management strategies.

Emerging research suggests a significant overlap between autism and hypermobility conditions like Ehlers-Danlos syndrome (EDS), with shared impacts on pain, fatigue, and autonomic dysfunction. This entry examines the evidence, prevalence, and management strategies.

Tics and Tourette syndrome (TS) commonly co-occur with autism, with overlapping neurodevelopmental roots. This entry covers prevalence, how to distinguish tics from stimming or compulsions, and evidence-based management strategies.