How Does DSM-5 Address Individuals Who Do Not Fit Neatly Into One ADHD Presentation? 

The DSM-5 recognises that not all individuals with ADHD fit neatly into one of the three main presentations — Inattentive, Hyperactive-Impulsive, or Combined. For those who display symptoms that do not clearly match any one category, the DSM-5 acknowledges the existence of an atypical ADHD presentation. This allows for a more flexible approach to diagnosis when symptoms are less straightforward. 

An atypical ADHD presentation can occur when an individual shows a mixture of symptoms from multiple presentations but does not meet the criteria for one specific category. For example, they might experience significant inattentive symptoms, but only mild signs of hyperactivity, or vice versa. The undefined presentation can also occur in cases where ADHD symptoms are less severe or where they only appear in specific settings, leading to diagnostic ambiguity. 

In these situations, the DSM-5 encourages clinicians to thoroughly evaluate all symptoms across different environments (for example, home, school, work) and consider the severity and impact of those symptoms. This ensures that a more accurate diagnosis is made, even if the individual’s presentation does not fit perfectly into the standard classifications. 

How It Helps 

By acknowledging atypical ADHD presentations, the DSM-5 ensures that individuals who do not fit traditional ADHD categories still receive the correct diagnosis and support. This approach helps in tailoring treatment plans to address the full range of symptoms, improving the effectiveness of interventions and overall care. 

Visit providers like ADHD Certify for personal consultations and expert advice tailored to your needs.   

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to DSM-5 Diagnostic Guidelines.