Erectile Dysfunction (ED), also known as impotence, is the inability to achieve or maintain an erection sufficient for sexual activity. It can be caused by physical factors such as diabetes, high blood pressure, or hormonal imbalances, as well as psychological factors like stress or anxiety. ED is commonly treated with oral medications such as sildenafil (Viagra), tadalafil (Cialis), and vardenafil (Levitra), which work by increasing blood flow to the penis. Lifestyle changes and addressing underlying health issues can also help manage the condition.