Tests for Erection Problems

Erection Problems Tests, Intracavernosal Injection Test (for Erection Problems), Nocturnal Penile Tumescence Test, Rigidity Test (for Erection Problems), Stamp Test (for Erection Problems)

Why It Is Done

Tests for erection problems are done to help find whether the cause of an erection problem is physical, psychological, or a combination of both.

Physical conditions that may cause erection problems include:

• Problems with the nerves of the penis. Conditions such as multiple sclerosis or diabetes may cause nerve damage that affects a man's ability to have an erection. Also, surgery, injury, or radiation treatment to the pelvic area may cause damage to the nerves of the penis.
• Problems with the blood vessels that supply blood to the penis. Conditions such as hardening of the arteries (atherosclerosis) may make it difficult for a man to have an erection. Activities such as long-distance bicycle riding on a hard, narrow saddle may increase a man's risk for having an erection problem. See a picture of blood supply to the penis.
• Low levels of hormones, such as testosterone or thyroid hormones.
• Side effects of medicines, such as medicines taken for high blood pressure (hypertension) or depression.
• The use of tobacco, alcohol, or illegal drugs.

Psychological tests may be needed if no physical cause is found for an erection problem. Psychological causes of erection problems may include:

• Anxiety about sexual performance.
• Relationship problems.
• Stress.
• Depression or grief.

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Author:	Monica Rhodes	Last Updated: May 21, 2008
Medical Review:	E. Gregory Thompson, MD - Internal Medicine Christopher G. Wood, MD, FACS - Urology/Oncology
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