Priapism is a relatively rare condition characterized by persistent painful
erection of the corpora cavernosum that occurs unrelated to sexual stimula
tion or desire. It has been associated with cocaine exposure, sickle cell a
nemia, anticoagulant therapy, neoplastic syndromes, diabetes, and the use o
f psychotropic medications. Androstenedione is a testosterone precursor use
d by athletes to enhance performance; the lay press has recently touted thi
s substance as an over-the-counter sexual stimulant. We describe an otherwi
se healthy man with 2 episodes of priapism after the use of androstenedione
. The patient did not have any factors known to precipitate priapism.