Here’s a startling fact: autistic girls are significantly less likely to receive a diagnosis compared to boys, even though autism may be just as prevalent in females as in males. But here’s where it gets controversial—a groundbreaking study reveals that boys are up to four times more likely to be diagnosed in childhood, raising questions about systemic biases in the diagnostic process. Could our understanding of autism be fundamentally flawed?
Led by the Karolinska Institutet in Sweden, this large-scale research analyzed autism diagnosis rates among 2.7 million individuals born between 1985 and 2020. The findings? By age 20, diagnosis rates between men and women were nearly identical, shattering the long-held belief that autism is predominantly a male condition. And this is the part most people miss—girls were diagnosed, on average, nearly three years later than boys, with median ages of 15.9 for girls and 13.1 for boys. This delay has profound implications for their access to support and understanding.
Dr. Caroline Fyfe, the study’s lead author, emphasizes that the gender gap in autism prevalence is far smaller than previously assumed, largely due to underdiagnosis or late diagnosis in girls and women. The research, published in the BMJ, also highlights that while gender disparities persist for children under 10, they diminish significantly in older age groups. This suggests that the male-to-female autism ratio may be vastly overestimated, to the point where it becomes indistinguishable by adulthood in Sweden.
Patient advocate Anne Cary argues that these discrepancies stem from systemic biases in diagnostic methods, rather than genuine differences in incidence. She points out that autistic girls often ‘mask’ their symptoms, making it harder for biased tools to identify their challenges. As a result, many girls who would eventually be diagnosed with autism have less than a one-third chance of receiving a diagnosis before age 10. This delay leaves them vulnerable to misdiagnosis with psychiatric conditions like mood or personality disorders, forcing them to self-advocate for proper recognition and care.
Autism charities stress the urgent need to dismantle gender stereotypes in diagnosis. Dr. Judith Brown of the National Autistic Society notes that outdated assumptions about autism being a ‘male condition’ have led to women and girls being overlooked. Misdiagnosed autistic women often develop coexisting mental health issues, such as anxiety and depression, due to a lack of support and the exhausting effort of masking their traits. Here’s a thought-provoking question—are we failing autistic girls by clinging to stereotypes that no longer hold up to scrutiny?
Jolanta Lasota, CEO of Ambitious about Autism, adds that autistic girls have long been misunderstood, leading to missed opportunities for vital support. In some cases, this has resulted in mental health crises. She calls for researchers and diagnostic services to deepen their understanding of how autism presents in girls and women, ensuring support systems evolve to meet their needs.
Dr. Conor Davidson, a former autism champion for the Royal College of Psychiatrists, highlights that autism in girls often goes undetected until adolescence or adulthood. While more women are now seeking diagnoses, long waiting lists for assessments remain a significant barrier. He stresses the importance of psychiatrists considering autism when evaluating mental health issues, especially in women whose condition may have been overlooked in childhood.
What do you think? Is the diagnostic system failing autistic girls, or are there deeper societal biases at play? Share your thoughts in the comments—this conversation is far from over.
