How is erectile dysfunction diagnosed?

    Last Updated: October 25, 2023

    The diagnosis of ED begins with a comprehensive evaluation including medical, sexual, and psychosocial history, a physical examination of genitourinary anatomy, and laboratory testing to rule out other conditions. Diagnosis and assessment of ED are also conducted using validated questionnaires such as the International Index of Erectile Function (IIEF), which assesses a patient’s response to various treatment strategies. The IIEF classifies ED into five categories: no ED (score of 22–25), mild ED (score of 17–21), mild-moderate ED (score of 12–16), moderate ED (score of 8–11), and severe ED (score of 1–7).[1]

    In certain cases, specialized diagnostic testing, including vascular testing using ultrasound, nocturnal penile tumescence (NPT), erection rigidity testing, and neuropsychological testing, may be performed.[2]

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