Which studies show women get diagnosed later than men? 

When it comes to ADHD diagnosis, a growing body of research shows that many women receive diagnoses significantly later than men, even when they’ve had symptoms for years. These findings point to gender differences ADHD in how symptoms are identified, referred, and assessed. In effect, late diagnosis in women is not an anomaly but a consistent pattern observed across clinical studies. 

Multiple reviews and data analyses have shown that girls are less likely to be diagnosed in childhood, and when diagnosis does occur, it often happens well into adolescence or adulthood. The diagnosis age ADHD (women) tends to be higher than for men, often because female symptoms are more internalised, less disruptive, and more easily masked by coping mechanisms. 

In some studies, the average age of diagnosis for women ranges from their mid-teens to late twenties, compared to earlier detection in boys, often during primary school years. This is attributed to symptom presentation, referral patterns, and clinician expectations that still lean on a male-centric model of ADHD. 

Insights and implications from these findings 

These studies collectively suggest that: 

• Females are underdiagnosed in childhood and often wait into adolescence or adulthood for recognition. 

• The diagnosis age ADHD (women) skews older, especially when symptoms were masked or misunderstood earlier in life. 

• Structural issues such as diagnostic criteria, symptom norming, and clinical bias all contribute to the delay. 

If you think your symptoms may have been overlooked, visiting providers like ADHD Certify can help align your experience with professional assessment. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Late diagnosis and gender differences.