For two decades, scientists have known the biochemical factors that trigger penile erection, but not what's needed to maintain one. Now an article by Johns Hopkins researchers, scheduled to be ...

Have you ever wondered how penile erection works but never dared to ask? Well, imagine a dry sponge in a condom. Now pour water on the sponge (that's the blood flowing in). There you have it. We ...

Have you ever wondered how penile erection works but never dared to ask? Well, imagine a dry sponge in a condom. Now pour water on the sponge (that’s the blood flowing in). There you have it. This ...

Whatever its intensity, it should never be considered "normal." To understand why erections can become painful, it's helpful ...

Unlike phosphodiesterase (PDE) inhibitors such as Viagra (sildenafil), Eroxon shouldn't take nearly as long to work. According to the Eroxon website, the application of the gel should take only 15 ...

Also known as erectile dysfunction, or impotence, erectile disorder (ED) is the inability to get or maintain an erection that is firm enough for sexual intercourse or other satisfying sexual activity.

Morning erection, also called nocturnal penile tumescence (NPT), occurs when the penis engorges with blood and you wake up with an erection. This is a perfectly normal occurrence. Most morning ...