Autism — neurodevelopmental difference

Autism spectrum disorder (ASD) is a lifelong neurodevelopmental condition affecting social communication and behaviour patterns — present from early childhood, though diagnosis may come later.

~700,000 autistic people in UK — spectrum — no single presentation.

Core features (DSM-5)

Social communication:

  • Difficulty with back-and-forth conversation
  • Reduced shared interests — joint attention
  • Non-verbal communication differences
  • Developing/maintaining relationships — may prefer solitude or parallel play

Restricted/repetitive patterns:

  • Stereotyped movements — hand flapping, rocking
  • Insistence on sameness — distress at change
  • Highly restricted interests — deep knowledge
  • Sensory hyper/hypo-reactivity — tags in clothes, noise, lights

Presentation across life

Children:

  • Language delay or difference
  • Play differences
  • School — bullying, exclusion without support

Adolescents:

  • Social complexity increases — mental health risk
  • Gender identity exploration — higher neurodivergent overlap

Adults:

  • Masking — copying social scripts — exhaustion
  • Late diagnosis — relief and grief
  • Workplace adjustments — clear instructions, quiet space

Girls and women

Underdiagnosed:

  • Better masking
  • Internalising — anxiety, eating disorders
  • Special interests may seem socially acceptable — celebrities, animals

Assessment pathway

Referral triggers (NICE):

  • Regression
  • Persistent social/communication concern
  • Parent/professional concern

Not diagnosed by:

  • Online quizzes alone
  • Single professional opinion without MDT

Differential:

  • ADHD — common overlap
  • Language disorder
  • Intellectual disability
  • Attachment difficulties — careful assessment

Support — not cure

Neuroaffirming approach:

  • Strength-based
  • Sensory environment modification
  • Visual schedules, social stories
  • Predictability reduces meltdowns

Meltdown vs tantrum:

  • Meltdown — overwhelm, not manipulative
  • Recovery space, reduce demands

Medication:

  • No autism drug
  • Treat co-occurring — anxiety, ADHD, sleep, irritability — judicious use

Rights

Equality Act 2010 — reasonable adjustments

EHCP — if educational needs exceed school SEN support

PIP — if daily living/mobility substantially affected

Common questions about autism

What are early signs of autism in children?
Limited eye contact and shared attention, delayed speech or unusual language (echolalia, formal speech), not pointing to show interest by 18 months, repetitive play (lining up toys), strong need for sameness, sensory sensitivities — sound, texture, light — intense interests. Girls may mask more — diagnosis often later.
Can adults be diagnosed with autism?
Yes — increasingly recognised. Signs include lifelong difficulty with small talk and friendships, missing social rules, sensory overload in shops or offices, camouflaging (masking) leading to burnout, special interests providing deep expertise. NHS adult autism assessment via GP referral — waiting times vary by area.
How is autism assessed on the NHS?
Multidisciplinary team — paediatrician, speech and language therapist, clinical psychologist, sometimes OT. Developmental history, ADOS or equivalent structured observation, school/nursery reports, differential diagnosis (ADHD, language disorder, anxiety). Adult pathway similar with self-report and informant history.
Is autism the same as Asperger syndrome?
Asperger syndrome is no longer a separate diagnosis — folded into autism spectrum disorder in DSM-5 and ICD-11. Previously described autistic people without intellectual disability or language delay — now all under autism with support needs specified.
What support is available after an autism diagnosis?
EHCP for school if needed, speech and language therapy, occupational therapy for sensory strategies, social skills groups, parent training, reasonable adjustments at work (Equality Act), Access to Work grants, local autism charities — National Autistic Society local branches.

Sources

How we reviewed this page

Medically reviewed by Dr Neil Singh, MBChB, nMRCGP

General Practitioner · GMC 7039648

Dr Neil Singh is a General Practitioner based in Yorkshire with over a decade of experience working in UK primary care.

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