For example, certain medications are known to interfere with the nerve signals that cause an erection. Heart disease, hardening of the arteries, and high blood pressure can cause damage to the blood vessels, interfering with blood flow to the penis. Diabetes can cause temporary or permanent damage to nerve tissues in the body, which may also interfere with erection. Men who are treated for prostate cancer sometimes develop ED as a result of their treatment. In just about all cases of ED even when there is a definite physical cause there is a psychological component as well.
Men typically feel anxiety, guilt, or depression, which in turn makes the problem worse.
Other psychological causes might include guilt about sexual pleasure, fear of intimacy, or anxiety. Women with long-term FSAD may simply be unaware of genital anatomy and function and therefore also not aware of effective arousal patterns and techniques. Taken an hour or so before sexual activity, it increases the concentration of a natural chemical in the penis that causes the blood vessels to dilate, which in turn increases blood flow to the penis. However, Viagra isn t the right choice for all men. Men who have heart problems or are taking medications that help widen the coronary arteries are not good candidates because the drug combination can make blood pressure dangerously low.