Look for persistent differences in social communication
Notice difficulty with back-and-forth conversation
Notice limited or unusual eye contact
Notice trouble interpreting facial expressions, tone, or body language
Notice difficulty making or keeping friendships
Notice preference for routines and distress with change
Notice repetitive movements, speech, or behaviors
Notice intense, focused interests
Notice strong sensitivity or low sensitivity to sounds, lights, textures, smells, or touch
Notice unusual reactions to sensory input
Notice delayed or different development of language or social skills
Notice literal interpretation of language or difficulty with sarcasm, jokes, or implied meaning
Notice repeated self-soothing behaviors during stress
Notice masking or copying social behavior to fit in
Notice signs present from early childhood
Notice that traits affect daily life, school, work, or relationships
Seek a professional evaluation for a reliable assessment