Erectile dysfunction (impotence) is when a male is unable to sustain an erection long enough for sexual intercourse. This issue may arise from time to time for men, however if you have an ongoing problem with this, you need to be evaluated.
Causes for Erectile Dysfunction
There are two main causes for ED: physical and psychological. For most cases, ED is due to physical issues, such as sleeping disorders or substance abuse. However because male arousal is a complex process (involving hormones, emotions, nerves, muscles and the vascular system), there are multiple causes for the