In order to achieve an erection, these facts must occur:
- The nerves to the penis must be functioning properly and flow.
- The blood circulation into the penis must be adequate.
- The veins must be able to “trap and keep” the blood inside the penis.
- There must be a stimulus from the brain to the penis.
If there is something interfering with any or all of these conditions, a full Erectile Dysfunction will happen.
Common causes of ED include diseases that affect blood flow, such asatherosclerosis (hardening of the arteries) or venous leakage (weak veins); nerve diseases; psychological factors, such as stress, depression, and performance anxiety; and injury to the penis. Chronic illness, certain medications, and a condition called Peyronie’s disease (scar tissue in the penis) can also cause Erectile Dysfunction.