Erectile Dysfunction

Erectile dysfunction (ED) is defined as a sexual dysfunction characterized by the inability to develop or maintain an erection of the penis during sexual performance. Psychic or organic reasons can be the reason and also a combination of both. Older men tend to have an organic reason, whereas younger men are more often affected by psychogenic reasons. The most common organic causes are cardiovascular disease and diabetes, neurological problems (e.g., nerve damage from pelvic surgery), drug side effects, and hormonal insufficiencies (hypogonadism).

Authors and Affiliations

1. Department of Urology and Urological Oncology, Hannover University Medical School, Hannover, Germany

   Axel S. Merseburger

Corresponding author

Correspondence to Axel S. Merseburger .

Editors and Affiliations

1. Dept. of Urology and Urologic Oncology, Medical School of Hanover (MHH), Hannover, Germany

   Axel S. Merseburger

2. Department of Urology and Urologic Oncol, Medical School of Hanover (MHH), Hannover, Germany

   Markus A. Kuczyk

3. Division of Urologic Surgery, Duke University Medical Center, Durham, North Carolina, USA

   Judd W. Moul

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