Sexual arousal disorders were previously known as frigidity in women and impotence in men, though these have now been replaced with less judgmental terms. Impotence is now known as erectile dysfunction, and frigidity has been replaced with a number of terms describing specific problems with, for example, desire or arousal. Nerves must be working normally for a man to get and keep an erection. Nerve damage can result from diabetes, multiple sclerosis, prostate surgery or damage to the spinal cord. If Sildenafil (Viagra), vardenafil (Levitra) and tadalafil (Cialis) drugs don't work or cannot be used because of potential side effects, your doctor can recommend other therapies. The drug alprostadil (Caverject, Edex, Muse) causes blood vessels to widen. This can allow blood to flow more freely in the penis, leading to an erection. The drug can be injected with a tiny needle, or a small pellet (suppository) can be inserted into the opening of the penis. Suppositories like this are effective in approximately two-thirds of men. Injections are effective about 80 percent of the time.
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