Priapism

It is a painful erection unrelated to sexual stimulation.

A few facts Erections following penile injections lasting more than two or hours is a symptom of Priapism. The most common cause of priapism is pharmacological injection therapy

Most erection due to sexual stimulation never approach four to six hours. Priapism is not associated with sexual excitement, at least not initially, and the erection does not subside after ejaculation. Priapism can occur in all age groups, including newborns. Most cases of priapism are clustered between two age groups: between the ages of five to ten and twenty to fifty years. Priapism constitutes a true urologic emergency. Men often joke that they wish they could have a permanent erection, but in reality, men are extremely miserable when this actually happens.

Priapism is the occurrence of any persistent erection for more than four hours duration in the absence of sexual stimulation. Priapism is named after Priapus, the Greek god of fertility, and the son of Aphrodite, the goddess of love. He was apparently an ugly, satyrlike man with enormous genitalia. He was the god of gardens, bees, goats and sheep. According to the story, Priapus had a huge tongue, a fat belly, and his penis was so large that he was restricted to the position of scarecrow in the fields.