What are the key signs and symptoms to consider when assessing a child for Autism Spectrum Disorder (ASD) in a primary care setting?

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 16 August 2025Updated: 16 August 2025 Guideline-Aligned (High Confidence) Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

When assessing a child for Autism Spectrum Disorder (ASD) in a primary care setting, key signs and symptoms to consider include:

  • Social communication difficulties: persistent challenges in reciprocal social interaction, such as limited interaction with others, lack of responsiveness, difficulties understanding social cues, and limited social demonstration of empathy ,.
  • Restricted and repetitive behaviours: including stereotypic behaviours like rocking or hand flapping, rigid routines, resistance to change, and marked repetitive activities especially under stress ,.
  • Developmental history concerns: delays or regression in language or social milestones, unusual play patterns, or atypical use and understanding of language ,.
  • Behavioural features: difficulties with socialisation skills, possible self-injurious behaviour, or behaviour that challenges daily functioning ,.
  • Additional observations: consider sensory sensitivities, motor coordination problems, and adaptive behaviour difficulties .
  • Contextual factors: signs and symptoms should be considered in the context of the child’s overall development, family concerns, and cultural background; do not exclude ASD based on good eye contact or normal early language milestones alone .

It is important to gather information from multiple sources including parents, carers, and educational settings, and to observe the child’s social and communication skills directly . Referral to a specialist autism team is recommended if persistent and significant limitations or impairments caused by these features are present .

Educational content only. Always verify information and use clinical judgement.