During erection, the spongy tissue relaxes and retains blood. The blood pressure in the chamber hardens the penis, which leads to an erection.
Erectile dysfunction (ED) refers to the inability to obtain or maintain an erection strong enough for sexual intercourse. It is sometimes referred to as impotence, although this term is not often used nowadays. Occasional ED is not uncommon. Many men experience it when they are stressed. However, frequent ED may be a sign of a health problem that requires treatment. It may also be a sign of emotional or interpersonal difficulties, which may require professional solutions.
