Erectile dysfunction (ED) is a medical condition that affects a man's ability to achieve or maintain an erection firm enough for sexual activity. It is also sometimes referred to as impotence. ED can be caused by a variety of physical and psychological factors, including age, hormonal imbalances, certain medications, nerve damage, cardiovascular disease, and anxiety or stress. The symptoms of ED can vary, but typically include difficulty achieving or maintaining an erection, reduced sexual desir