Penile erection

An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged. Penile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with sexual arousal, sexual attraction or libido, although erections can also be spontaneous. The shape, angle, and direction of an erection vary considerably between humans.

form of sexual dysfunction in males

spontaneous erection during or after sleep

American artist (1947–2022)

medical device, implanted for the surgical treatment of organic erectile dysfunction

urban legend

medical condition