The document outlines the steps for clinically diagnosing ADHD. First, it involves checking for prenatal risk factors and family history of ADHD. Next, it examines evidence of childhood onset of hyperactive, impulsive, and inattentive symptoms. Then, it looks at the persistence of symptoms into adolescence and adulthood resulting in impairments across multiple domains like education and relationships. Finally, it rules out underlying medical conditions as potential causes of symptoms.