For decades, the public perception of Attention-Deficit/Hyperactivity Disorder (ADHD) has been shaped by the image of a hyperactive and disruptive boy. This has led to a significant gender bias in diagnosis, where countless women and girls who meet criteria for predominantly inattentive presentation of ADHD are consistently overlooked by teachers and clinicians, leading to years of frustration, self-doubt, and delayed treatment.

Current statistics released by NIH and CDS tell a clear story: girls are diagnosed an average of five years later than boys, and the disparity in diagnosis rates suggests a fundamental misunderstanding of how ADHD manifests in female patients.

There are many reasons that women and girls with Inattentive ADHD slip through the cracks of the education and medical systems.

  1. The Symptoms are hidden and don’t present as “problematic.”

Under-diagnosis is Cleary impacted by the gender differences in symptom presentation.

  • Boys are more likely to externalize: Their symptoms are typically hyperactive or impulsive. Boys with ADHD are highly visible because they are acting out, blurting out answers, and have difficulty sitting still.  These disruptive behaviors quickly draw the attention of teachers and parents who are motivated to get these behaviors under control.
  • Girls are more likely to internalize: Girls are more likely to meet criteria for the inattentive type of ADHD and the symptoms are primarily inattentive. This can look like quiet daydreaming, forgetfulness, poor attention to detail, and chronic disorganization. While debilitating for the individual, these symptoms are not disruptive to the class environment. Teachers who are often looking for behavioral problems as a key indicator of ADHD are much less likely to refer inattentive girls for an evaluation.
  1. Women and Girls are Masters the Art of “Masking” and Compensation

Girls are often socialized to be people-pleasers and high achievers, which encourages them to develop exhausting coping strategies to meet expectations and “masks” to hide their internal struggles.

  • Overcompensation: A girl with ADHD might spend hours on a single assignment, employing extreme perfectionistic standards or studying late into the night, just to produce work that appears “normal” or excellent.
  • Mental Exhaustion: The continuous effort to compensate for poor executive function skills (like planning and organizing) is an exhausting form of “masking,” which hides the severity of their condition from teachers, parents and doctors. People around them only see the successful outcome, not the overwhelming effort and self-doubt required to achieve it.
  1. Misdiagnosis as Anxiety or Depression

For many women, the first and only diagnosis they receive is for generalized anxiety disorder or major depressive disorder.

  • Anxiety and Mood Disorders as Complications: Constant failure to meet expectations, feeling “lazy” or “spacey,” and chronic self-blame erode self-esteem and lead to significant anxiety and low mood. These are often the consequences of undiagnosed ADHD.
  • The Diagnostic Trap: When a woman finally seeks help, clinicians often misattribute the symptoms of inattention and disorganization as secondary to anxiety or depression rather than the opposite. Since anxiety and depression are more common in women,  the underlying ADHD symptoms may be completely missed or misdiagnosed.
  1. The Influence of Gender Bias in ADHD Research

Research on ADHD has historically focused on male subjects, perpetuating a narrow definition of the disorder. Despite being a disorder that applies to children and adults, the current DSM definition still describes the symptoms for a 9-year-old boy with the hyperactive type of ADHD.

  • Clinical Awareness: Clinicians are not trained to assess for inattentive symptoms, and according to the DSM criteria, symptoms of inattention are considered “sub-threshold” when compared to the highly externalized behaviors of hyperactive boys.
  • Internalized Stigma: Many women and girls with inattentive ADHD are given labels like “spacey,” “ditzy,” or “irresponsible” because their family members, teachers, and bosses do not understand that their struggles are due to a neurodevelopmental difference, not a moral failing. These labels create shame and self-blame that keeps women and girls from seeking professional help.

The growing awareness of Inattentive ADHD in women and girls is a critical step in closing the diagnostic gap. Recognizing that quiet, internal struggle is just as valid a symptom as outward hyperactivity is essential for ensuring they receive the timely, effective treatment they need and deserve.