We are not doctors. We are advocates. Nothing on this site constitutes medical advice.

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Autism Signs: What to Look For

This checklist is not a diagnostic tool. It is a starting point for conversations with evaluators. No checklist can diagnose autism — only a comprehensive evaluation can do that. We are not doctors. We are advocates.

Social Communication and Interaction

Difficulty with back-and-forth conversation — may dominate with their own interests or not engage in reciprocal exchange
Limited or atypical use of eye contact — may avoid it, may use it in an unusual way, or may use it mechanically
Challenges understanding nonverbal communication — facial expressions, body language, tone
Difficulty making and keeping friendships — may want friendships but struggle with the navigation
Little spontaneous sharing of interests, emotions, or observations with others
May appear to prefer solitude, or may seek connection but in ways that seem one-sided to others
May take language very literally — misses sarcasm, figures of speech, or implied meaning
Difficulty adjusting communication for different social contexts

Restricted and Repetitive Behaviors

Intense, focused interests in specific topics — knowing an unusual amount about a narrow subject
Insistence on sameness, routines, and predictability — significant distress when routines change
Repetitive movements (stimming) — hand-flapping, rocking, spinning, lining up objects, repeating sounds or words
Rigid thinking — difficulty with flexibility, gray areas, or unexpected changes
Repetitive play patterns — playing with toys in a specific way rather than imaginatively
Strong preference for specific foods, textures, clothing, or environments

Sensory Differences

Hypersensitivity to sounds, lights, smells, textures, or tastes — may cover ears, avoid certain environments
Hyposensitivity — seeking intense sensory input, high pain tolerance, not noticing sensory stimuli others react to
Sensory overwhelm in busy environments — malls, crowds, loud events
Strong reactions to clothing textures, seams, or physical sensations
Unusual visual attention — fascination with lights, patterns, spinning objects

If several items across multiple categories feel familiar — especially if these traits have been present from early childhood and affect daily functioning — it may be worth pursuing a formal evaluation. The checklist is not a diagnosis. It is a starting point.

Is This Autism? →When to Evaluate →Getting a Diagnosis →