<unk>  is a potentially harmful medical condition in which the erect penis does not return to its flaccid state (despite the absence of both physical and psychological stimulation) within about four hours.  It is often painful.<unk>  is considered a medical emergency, which should receive proper treatment by a qualified medical practitioner.
The name comes from the Greek god Priapus, referring to the myth that he was ironically punished by the other gods for attempting to rape a goddess, by being given a huge (but useless) set of wooden genitals.
Priapism
Chromophobia
Neophobia
Sexual obsessions
Urinary incontinence
Urinary incontinence  
Emetophobia
Anthophobia