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Erectile Dysfunction

(ED; Impotence; Male Erectile Disorder)

 

Definition

Erectile dysfunction (ED) is trouble getting or keeping an erection of the penis. The penis is not firm enough to have sex.

 

Causes    TOP

An erection happens when blood fills the penis. Some blood vessels open wide to let blood flow into the penis. Other blood vessels shrink to keep the blood from leaving the penis. The change in the blood vessels is controlled by nerves.

ED may be caused by:

  • Blood vessel injury or disease. These can change blood flow.
  • Harm to nerves that control blood vessels or feeling in the penis.
  • Stress that change how the nerves work—This is more likely in men with sudden ED.
  • Hormone problems such as low testosterone or thyroid disease.
  • Certain medicines such as those that treat high blood pressure, mental health problems, or heart rhythm problems.
  • Structural problems caused by Peyronie disease, hypospadias, or penile fracture.
 

Risk Factors    TOP

ED is more common in men aged 40 years and older. The risk goes higher with age.

The chances of ED are higher in men who:

 

Symptoms    TOP

The main symptom of ED is not being able to get or keep an erection long enough to have sex.

 

Diagnosis    TOP

The doctor will ask about your symptoms and health past. A physical exam will be done. This will include a genital and rectal exam.

The doctor will ask about the quality of erections. This may include questions about the time of day, how rigid the erection is, and how long it lasts. The doctor may also ask about your mental state, desire, arousal, ejaculation, and orgasms. The answers can help point to the source of the problem.

A nocturnal penile tumescence test will check for erections while you sleep. If you have normal erections during sleep the cause may be psychological. If you have problems with an erection, even while you sleep, the cause may be physical.

Other tests to find a cause may include:

  • Blood tests—to check for health problems such as diabetes or high cholesterol, or look at testosterone levels
  • Doppler ultrasound—to check blood flow in the penis
 

Treatment    TOP

ED care may involve one or more of these:

Lifestyle Habits

Many lifestyle habits can be changed. These can help blood flow, or how nerves and blood vessels work. General steps are:

  • Lose excess weight—This can also help balance hormones.
  • Quit smoking—Your doctor will help you find the best method.
  • Get regular exercise.
  • Limit alcohol to 2 drinks or less a day.
  • Do not use illegal drugs.
  • Find ways to relax and lower stress.

Medicine

ED can be treated with medcine to:

  • Relax muscles and improves blood flow to the penis—do not take some of these medicines if you take nitrates
  • Boost testosterone levels—these supplements are only helpful if you have low testosterone

ED medicine can be taken by mouth or as a shot, or be placed on the skin or into the tip of the penis.

Talk to your doctor before taking any over the counter medicine for ED. Some of them may be unsafe.

Vacuum Devices    TOP

A vacuum device pulls blood into the penis. A band is placed around the penis to keep the erection.

Surgery    TOP

Surgery can be used to fix blood vessels or other structural problems.

Penile Implants    TOP

Implants may be placed in the penis. The implants can be inflated to make an erection when needed.

Penile Implant

penile implant smaller

Copyright © Nucleus Medical Media, Inc.

Sex Therapy    TOP

Sex therapy may help ED caused by:

This can be done alone or with a partner.

 

Prevention    TOP

To help lower your chances of ED:

RESOURCES:

Family Doctor—American Academy of Family Physicians
https://familydoctor.org

Urology Care Foundation
https://www.urologyhealth.org

CANADIAN RESOURCES

Health Canada
https://www.canada.ca

Sex & U—The Society of Obstetricians and Gynaecologists of Canada
http://www.sexandu.ca

REFERENCES:

Erectile dysfunction. EBSCO DynaMed website. Available at: http://www.dynamed.com/topics/dmp~AN~T113875/Erectile-dysfunction. Updated February 29, 2016. Accessed July 17, 2019.

Erectile dysfunction. National Institute of Diabetes and Digestive and Kidney Diseases website. Available at: https://www.niddk.nih.gov/health-information/urologic-diseases/erectile-dysfunction. Accessed July 17, 2019.

Erectile dysfunction. Urology Care Foundation website. Available at:
...(Click grey area to select URL)
Accessed July 17, 2019.

Shamloul R, Ghanem H. Erectile dysfunction. Lancet. 2013;381(9861):153-165.



Last reviewed June 2019 by EBSCO Medical Review Board Adrienne Carmack, MD
Last Last updated: 7/17/2019

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