Erectile dysfunction (impotence) is the inability to get and keep an erection firm enough for sex.
What is Erectile Dysfunction?
When a man becomes aroused, the brain releases a neurochemical to increase the size of blood vessels carrying blood to the penis and reduce the size of the vessels that carry it out.
Twin compartments that run the length of the penis, called corpora cavernosa, become flush with blood that is trapped in the shaft.
This causes the penis to stiffen and become erect.
If blood flow to the penis is inhibited or the blood vessels are clogged or constricted, erection cannot be achieved or maintained.
This is one of the primary causes of erectile dysfunction.
Having erection trouble from time to time isn’t necessarily a cause for concern. If erectile dysfunction is an ongoing issue, however, it can cause stress, affect your self-confidence and contribute to relationship problems. Problems getting or keeping an erection can also be a sign of an underlying health condition that needs treatment and a risk factor for heart disease.
If you’re concerned about erectile dysfunction, talk to your doctor — even if you’re embarrassed. Sometimes, treating an underlying condition is enough to reverse erectile dysfunction. In other cases, medications or other direct treatments might be needed.
Symptoms of Erectile Dysfunction
Symptoms of ED can include:
- Erections are hard to get
- Erections are less rigid
- Erections are not satisfactory for penetration
- Erections cannot be maintained during sexual activity or until the man’s orgasm is reached
- Erections cannot be achieved at all
Men with ED can lose confidence in their sexual ability and their overall sense of self-worth can be negatively affected.
Erectile dysfunction can have a devastating psychological impact for individuals and couples.
Causes of Erectile Dysfunction
In the majority of cases, erectile dysfunction occurs when blood flow to the penis is inhibited either by cardiovascular problems or poor nerve signalling. Healthy arousal engorges the penile tubes (corpora cavernosum) with arterial blood causing it to stiffen and become erect. The engorged corpora occlude the venous outflow of blood, creating a rigid or full erection. Erection dysfunction occurs when there is either poor influx of arterial blood or efflux of venous blood (venous leak).
While both psychological and biological factors can cause erectile dysfunction, in reality the mind and body work together in sexual arousal, so most men have both factors in varying proportions.
Psychological Causes of ED
Men who suffer from clinical depression, anxiety, chronic stress, or who are experiencing challenges in their relationship with their partner, may have erectile difficulties. Some of the medications that treat depression can also contribute to the problem. The inability to perform sexually can cause further anxiety and depression, creating a downward spiral.
Biological Causes of ED
Health conditions or lifestyle choices that affect blood circulation, structural anomalies in the penis, certain neurological conditions, hormonal deficiencies, and medication side effects, can all contribute to erectile dysfunction. The chart below lays out examples of potential biological reasons for a man’s erectile dysfunction.
Risk factors
As you get older, erections might take longer to develop and might not be as firm. You might need more direct touch to your penis to get and keep an erection.
Various risk factors can contribute to erectile dysfunction, including:
- Medical conditions, particularly diabetes or heart conditions
- Tobacco use, which restricts blood flow to veins and arteries, can — over time — cause chronic health conditions that lead to erectile dysfunction
- Being overweight, especially if you’re obese
- Certain medical treatments, such as prostate surgery or radiation treatment for cancer
- Injuries, particularly if they damage the nerves or arteries that control erections
- Medications, including antidepressants, antihistamines and medications to treat high blood pressure, pain or prostate conditions
- Psychological conditions, such as stress, anxiety or depression
- Drug and alcohol use, especially if you’re a long-term drug user or heavy drinker
Complications
Complications resulting from erectile dysfunction can include:
- An unsatisfactory sex life
- Stress or anxiety
- Embarrassment or low self-esteem
- Relationship problems
- The inability to get your partner pregnant
Prevention of ED
The best way to prevent erectile dysfunction is to make healthy lifestyle choices and to manage any existing health conditions. For example:
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- Work with your doctor to manage diabetes, heart disease or other chronic health conditions.
- See your doctor for regular checkups and medical screening tests.
- Stop smoking, limit or avoid alcohol, and don’t use illegal drugs.
- Exercise regularly.
- Take steps to reduce stress.
- Get help for anxiety, depression or other mental health concerns.
Finding the cause of your ED will help direct your treatment options.
Diagnosing ED starts with your health care provider asking questions about your heart and vascular health and your erection problem. Your provider may also give you a physical exam, order lab tests or refer you to a Urologist.
Health and ED History
Your doctor will ask you questions about your health history and lifestyle. It is of great value to share facts about drugs you take, or if you smoke or how much alcohol you drink. He/she will ask about recent stressors in your life. Speak openly with your doctor, so he/she can help you find the best choices for treatment
What Questions Will the Health Care Provider Ask?
Questions about your health:
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- What prescription drugs, over-the-counter drugs or supplements do you take?
- Do you use recreational drugs?
- Do you smoke?
- How much alcohol do you drink?
- Have you had surgery or radiation therapy in the pelvic area?
- Do you have any urinary problems?
- Do you have other health problems (treated or untreated)?
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Questions About ED
Knowing about your history of ED will help your health provider learn if your problems are because of your desire for sex, erection function, ejaculation, or orgasm (climax). Some of these questions may seem private or even embarrassing. However, be assured that your doctor is a professional and your honest answers will help find the cause and best treatment for you.
Questions about your ED symptoms:
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- How long have you had these symptoms? Did they start slowly or all at once?
- Do you wake up in the morning or during the night with an erection?
- If you do have erections, how firm are they? Is penetration difficult?
- Do your erections change at different times, like when going in a partner, during stimulation by mouth, or with masturbation?
- Do you have problems with sex drive or arousal?
- Do you have problems with ejaculation or orgasm (climax)?
- How is this problem changing the way you enjoy sex?
- Do you have painful with erections, feel a lump or bump in the penis or have penile curvature? These are signs of Peyronie’s Disease which can be treated but calls for an expert in urology to assess and manage.
Questions About Stress and Emotional Health
Your health care provider may ask you questions about depression or anxiety. He or she may ask about problems in your relationship with a partner. Some health care providers may also ask if they may talk to your sex partner.
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- Are you often under a lot of stress, or has something recently upset you?
- Do you have any anxiety, depression or other mental health issues?
- Are you taking any drugs for your mental health?
- How satisfied are you with your sex life? Has there been any changes lately?
- How is your relationship with your partner? Has there been any changes lately?
Physical Exam
A physical exam checks your total health. Examination focusing on your genitals (penis and testicles) is often done to check for ED. Based on your age and risk factors, the exam may also focus on your heart and blood system: heart, peripheral pulses and blood pressure. Based on your age and family history your doctor may do a rectal exam to check the prostate. These tests are not painful. Most patients do not need a lot of testing before starting treatment.
Lab Tests
Your health care provider may order blood tests and collect a urine sample to look for health problems that cause ED.
Other Tests
Questionnaires are often used by health experts to rate your ability to initiate and keep erections, gauge your satisfaction with sex and help identify any problems with orgasm.
Advanced Erectile Function Tests
For some men with ED, specialized testing may be needed to guide treatment or re-assess you after a treatment fails.
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- Blood work to check Testosterone and other male hormones
- Blood work to measure blood sugar (Diabetes)
- Ultrasonography (penile Doppler) to check blood flow
- A shot into the penis with a vascular stimulant to cause an erection
- Pelvic x-rays like arteriography, MRI or CT scanning are rarely needed to check ED unless there is history of trauma or cancer
- Nocturnal penile tumescence (NPT), an overnight test to check for sleep erection