Testicular torsion is described as a twisting of the male organ that makes
hormones and sperm (testicle). When the testicle rotates (testicular
torsion), it twists the cord supplying blood to the loose bag of skin
(scrotum) beneath the penis. This may occur after vigorous activity, a
minor injury to the testicles, or sleep. Sudden, severe pain and swelling
in the testicle are symptoms. Surgery is required. Treated promptly, the
testicle can often be saved. A longer wait may affect fertility.
