Diagnosing ADHD can be a complex process that involves gathering information from multiple sources. Healthcare professionals use the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria to diagnose ADHD. This includes a comprehensive evaluation of a person's symptoms, medical history, and family history.

One of the challenges surrounding ADHD diagnosis is the potential for overdiagnosis and misdiagnosis. This can happen due to the overlap of symptoms between ADHD treatment and other conditions, as well as the subjective nature of some symptoms. It is important for individuals to seek a professional diagnosis to ensure accurate treatment.