An erection is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged. Penile erection is the result of a complex interaction of.
Random erections are normal. Teenagers and young adults are more likely to get random erections, though they can occur in adult men too. Random erections.
Erectile Dysfunction (ED) in Young Men: Causes and Treatments Researchers found that ED affected 26 percent of adult men under 40.