Autism in Girls and Women: Recognition and Support in Ontario

The Female Autism Phenotype

Research by Lai et al. (2015) and Hull et al. (2020) has identified a "female autism phenotype" characterized by: greater social motivation and imitation of social behavior (masking/camouflaging), restricted interests that are socially conventional (animals, celebrities, fiction) rather than stereotypically autistic (trains, numbers), internalizing rather than externalizing distress (anxiety, depression, eating disorders rather than meltdowns or aggression), and one or two close friendships that appear typical to observers but require enormous effort to maintain.

Camouflaging — consciously or unconsciously suppressing autistic traits and imitating neurotypical behavior — is more common and more intensive in autistic women. Hull et al. (2017) found that camouflaging is cognitively exhausting and associated with increased anxiety, depression, suicidal ideation, and identity confusion. Many autistic women describe camouflaging as "performing a character all day" and experiencing collapse (shutdown, meltdown, or severe fatigue) when they reach a safe environment.

The "double empathy problem" applies strongly here: clinicians who do not experience autism may not recognize it in women who present as socially competent. A woman who makes eye contact, uses appropriate conversational turn-taking, and expresses empathy may be judged as "not autistic enough" even when these behaviors cost her enormous cognitive and emotional energy.

Diagnostic Barriers and Misdiagnosis

Autistic women in Ontario report a median of 4-5 misdiagnoses before receiving an autism assessment. Common prior diagnoses include generalized anxiety disorder, social anxiety disorder, major depressive disorder, borderline personality disorder, bipolar disorder, eating disorders (particularly ARFID and anorexia), and ADHD. These conditions may genuinely co-occur with autism, but when autism is the underlying condition, treating only the co-occurring diagnosis is insufficient.

Assessment tools contribute to the diagnostic gap. The ADOS-2, the gold-standard observation tool, was developed and normed on predominantly male samples. Autistic women who have developed strong camouflaging skills may score below clinical thresholds on the ADOS-2 while meeting full diagnostic criteria based on history and self-report. Experienced clinicians supplement standardized tools with the Camouflaging Autistic Traits Questionnaire (CAT-Q) and detailed developmental history that specifically probes for female-pattern autistic traits.

Ontario Assessment and Support

A growing number of Ontario clinicians specialize in female autism presentation. In Toronto, CAMH's Adult Autism Clinic, the Geneva Centre for Autism, and several private psychologists offer assessment informed by female autism research. York University's Autism Research Centre conducts research specifically on autism in women. In Ottawa, the Royal Ottawa Mental Health Centre provides adult autism assessment.

For girls, developmental pediatricians and psychologists who are aware of the female phenotype can provide more accurate assessment. Parents concerned about their daughter's social, emotional, or sensory functioning should specifically mention "autism" when requesting referral, as referrals for "anxiety" or "social difficulties" alone may not lead to autism assessment.

Peer support for autistic women in Ontario includes Autism Ontario's women's support groups (offered in several regions), online communities such as the Ontario Autistic Women's Network, and private Facebook groups connecting diagnosed and self-identifying autistic women. These communities provide validation, practical strategies, and connections to knowledgeable service providers.