Final answer:
Erectile dysfunction is a common disorder characterized by difficulty initiating or maintaining an erection. It can be caused by physiological or psychological factors. Prescription drugs like Viagra® or Cialis® are commonly used to treat ED by increasing blood flow to the phallus.
Step-by-step explanation:
Erectile dysfunction (ED) is a condition in which a person has difficulty either initiating or maintaining an erection. It is a common disorder that affects about 40 percent of people with phalluses. The underlying causes of ED can include physiological factors such as diabetes, vascular disease, and problems with the testes, as well as psychological factors.
Prescription drugs such as Viagra® or Cialis® are commonly used to treat ED by increasing blood flow to the phallus. Other treatments may include lifestyle changes, topical creams, injection of drugs into the phallus, vacuum pumps, or phallus implants.