Erectile dysfunction is the problem of achieving an erection or maintain it interferes with sexual function hindering or obstructing. A study found that the capacity of men is determined by the belief that sexual function is adequate, this concern is also related to premature ejaculation.
Erectile dysfunction affects millions of men around the world, a study found 20 million men in the U.S., 150 million worldwide, over 50% of men over 40 years. The man does not achieve an erection satisfactory for sexual intercourse, this situation is very different from infertility.
This problem has psychological causes and / or organic.