Co-Occurrence of ADHD and Autism: Prevalence, Presentation, and Clinical Implications

This review article from PubMed Central examines the evidence for ADHD-Autism co-occurrence, which studies now estimate at 50-70% of autistic individuals and 20-50% of those with ADHD.

The paper discusses why co-occurrence was historically under-recognized (the DSM-IV prohibited dual diagnosis until 2013), how overlapping symptoms create diagnostic confusion, and the clinical implications for treatment approaches that need to address both conditions simultaneously.

For clinicians and researchers, this is a foundational reference. For individuals, it validates the experience of not fitting cleanly into either diagnostic box.