How Co-Traveling Accessory Symptoms and Comorbidities Affect Making the Diagnosis of Adult ADHD

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that has profound personal and societal impacts, yet this condition remains underdiagnosed and under-treated in adults due to challenges in distinguishing its nuanced symptom-atology from overlapping psychiatric comorbidities and co-traveling accessory symptoms. This article reviews how co-traveling accessory symptoms, such as emotional dyscontrol, executive functioning deficits, and cognitive disengagement syndrome, as well as comorbid conditions like depressive disorders, bipolar disorders, anxiety disorders, substance use disorders, and personality disorders, complicate the diagnostic process. Each accessory symptom and psychiatric comorbidity not only shares overlapping features with ADHD but also contributes to greater functional impairment and may exacerbate ADHD symptoms. Limitations in our current diagnostic frameworks can further hinder recognition of broader symptom presentations in adults. Increased awareness of co-traveling accessory symptoms and comorbidities may improve identification and treatment outcomes for this disorder in adults, thus better addressing the consequences of untreated ADHD and enhancing quality of life for those affected. [ Psychiatr Ann . 2024;54(12):e325–e329.]