ADHD Looks Different in Girls

The diagnostic criteria for ADHD were historically developed based on studies of hyperactive young boys. This early research focus created a male-centric model of the disorder, leading to the persistent and inaccurate belief that ADHD is primarily a "boy's disorder." Consequently, boys are diagnosed with ADHD up to three times more often than girls during childhood. However, the diagnostic ratio approaches 1:1 in adulthood, suggesting many girls are overlooked until their symptoms become unmanageable later in life. In boys, symptoms often manifest externally as hyperactivity and impulsivity, which are more disruptive in a classroom setting. In girls, ADHD more commonly presents as internalizing symptoms like inattentiveness, disorganization, or being "spacey," which are often dismissed as personality traits. When girls do exhibit hyperactivity, it may appear as being overly talkative or emotionally intense rather than physically restless. Societal expectations often pressure girls to be less disruptive, leading them to develop coping mechanisms to "mask" their struggles, which can delay or prevent diagnosis. Due to these less obvious symptoms, girls with ADHD are frequently misdiagnosed with other conditions, most commonly anxiety or depression. One study found that 46% of women with ADHD had been previously misdiagnosed with a different disorder. The long-term consequences of undiagnosed ADHD in women can be severe, leading to chronic low self-esteem, academic and career difficulties, and strained relationships. It also puts them at a higher risk for developing anxiety disorders, depression, and eating disorders.