Impotence (erectile dysfunction) is a condition of a man's penis is not able to tense, either temporarily or permanently when aroused or will have sexual intercourse with a woman. impotence can happen to men of any age, but commonly occurs in middle-aged men, the age of 40 years and over. Men who had impaired sexual function will not feel completely happy in his life. Although sex is not the primary purpose of marriage, but a harmonious relationship of husband and wife are often influenced by their sexual health.