How to Diagnose ADHD To determine ADHD, providers use clinical interviews as well as behavior rating scales, symptom checklists completed by the patient and others in his or her life, as well as psychiatric histories and medical information. Psychotherapy is also used to manage symptoms. <img width="300" src="https://static.wixstatic.com/media/8851d4_979c71a4597b41a8ba310784669
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