Erectile dysfunction, often known by its initials ED, is a condition which makes it difficult for a man to get and maintain an erection. Sometimes this fear of losing the erection may make him rush sex, which can lead to him climaxing too soon. This can be the start of premature ejaculation.
If you believe that you may be suffering from erectile dysfunction you should seek medical advice. Sometimes ED can be a sign of another underlying health condition, such as diabetes.