To understand what happens in ED, it's helpful to know some anatomical basics. When aroused by either sensory or mental stimuli, the brain sends a signal through the nerves to the penis, causing the muscles there to relax. This opens up space for blood to flow in and engorge the penis. A membrane within the penis traps blood inside to help maintain the erection, which subsides when the penile muscles contract, forcing blood back into the rest of the body. Any number of things can go wrong in this process, leading to erectile dysfunction.
The most common diagnostic test for erectile dysfunction is called penile ultrasound. This test uses sound waves to look for abnormal penile blood supply. Another test that may be done is nocturnal penile tumescence testing, in which a type of computer is attached to the penis to see if nighttime erections are occurring. If a young man is having nighttime erections but can’t get an erection during sex, a psychological cause becomes more likely.
We are writing this commentary to provide urologists with additional information regarding ED in young men and to open the discussion for new approaches to treatment of ED in young men. Hypertonic cavernous smooth muscle is an organic etiology of erectile dysfunction and should be considered in the differential diagnosis for these young men. Developing a system to explain the pathophysiologic mechanism of the dysfunction may make it easier to effectively treat these complex patients.
"Erectile dysfunction can be a very serious issue because it's a marker of underlying cardiovascular disease, and it often occurs before heart conditions become apparent. Therefore, men should consider improving their weight and overall nutrition, exercise more, drink less alcohol and have a better night's sleep, as well as address risk factors such as diabetes, high blood pressure and cholesterol.

Fully restoring sexual health with treatment of a medical condition (such as high blood pressure with diet and/or exercise or by controlling diabetes or other chronic diseases) may not be possible. Identification and treatment of these conditions may prevent the progression of ED and affect the success of various ED therapies. Nutritional states, including malnutrition, obesity, and zinc deficiency, may be associated with erectile dysfunction, and dietary changes may prove a sufficient treatment. Masturbation and excessive masturbation are not felt to cause ED, however, if one notes weak erections with masturbation, this may be a sign of ED. Some men who masturbate frequently may have troubles with achieving the same degree of stimulation from their partner, but this is not ED.

Problems with the veins that drain the penis can also contribute to erectile dysfunction. If the veins are not adequately compressed, blood can drain out of the penis while blood is coming into the penis and this prevents a fully rigid erection and maintaining an erection. Venous problems can occur as a result of conditions that affect the tissue that the veins are compressed against, the tunica albuginea. Such conditions include Peyronie's disease (a condition of the penis associated with scarring [plaques] in the tunica albuginea that may be associated with penile curvature, pain with erections, and ED), older age, diabetes mellitus, and penile trauma (penile fracture).
Psychological causes are less common than we thought but more often the cause in younger men. Performance anxiety triggers the release of adrenaline. Adrenaline causes blood to flow TO the vital organs, such as the heart, lungs and brain, and AWAY from less vital structures like the fingers, toes and the penis. Our bodies do this to cope with the physical stress of a physical attack or physical challenge, but sexual anxiety also triggers this reflex.
Because blood vessel problems are the leading cause of erectile dysfunction, erections have been described as a useful barometer for a man’s overall health. The American Heart Association urges that physicians screen for cardiovascular risks in patients who have erectile dysfunction, even if no other risk factors are present; the onset of ED can precede cardiac events by two to five years.
Taking one of these tablets will not automatically produce an erection. Sexual stimulation is needed first to cause the release of nitric oxide from your penile nerves. These medications amplify that signal, allowing some men to function normally. Oral erectile dysfunction medications are not aphrodisiacs, will not cause excitement and are not needed in men who get normal erections.
Natural treatments: Although natural remedies are increasingly available for sale over the counter, there is little scientific evidence to support their claims of improving ED. These remedies may produce adverse side effects or react negatively with other medications a man is taking. Before trying any over-the-counter treatments, it is essential to consult a doctor.

In some cases, however, these drugs may be unsuitable for patients with heart disease. If you are considering one of these drugs and you have heart disease, as many diabetics do, be sure to tell your doctor. In rare cases, the pills may create “priapism,” a prolonged and painful erection lasting six hours or more (although reversible with prompt medical attention).

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