genitourinary disorders
Erectile Dysfunction
Introduction
Erectile dysfunction is the inability to attain or sustain an erection satisfactory for sexual intercourse. Most erectile dysfunction is related to vascular, neurologic, psychologic, and hormonal disorders; drug use can also be a cause. Evaluation typically includes screening for underlying disorders and measuringtestosteronelevels. Treatment options include oral phosphodiesterase inhibitors, intraurethral or intracavernosal prostaglandins, vacuum erection devices, and surgical implants. (See also Overview of Male Sexual Function and Dysfunction .) Erectile dysfunction (ED—formerly called impotence) affects up to 20 million men in the US. The prevalence of partial or complete ED is>50% in men aged 40 to 70, and prevalence increases with aging. Most affected men can be successfully treated. 