Persistent and painful erection of the penis.Another important genitourinary problem is priapism: a painful, persistent erection due to vaso-occlusive obstruction of the venous drainage of the penis....
Trazodone has been associated with priapism - persistent, usually painful erections not associated with sexual arousal.
Although priapism can occur at any age, it is most common in men 20 to 50 years of age.
Origin
Late Middle English: via late Latin from Greek priapismos, from priapizein 'be lewd', from Priapos(Greek form of Priapus).