Hirsuties papillaris genitalis (more commonly referre to as 'pearly penile papules', or PPP) is a clinical skin condition of the male genital organs. It is a harmless physiological phenomenon with no malignant potential, although it can be mistaken for warts by inexperienced doctors. The papules appear as one or several rows of small, flesh-colored, smooth, dome-topped bumps situated circumferentially around the corona (see image) or sulcus of the glans penis. Uncommonly, lesions may extend onto the glans penis. It is not a sexually transmitted disease and its appearance is unrelated to sexual activity or standards of personal hygiene. The bumps are however extremely sensitive and many sufferers view this sensitivity as unwelcome. A 1999 medical study found that 48% of 200 men attending a department of genitourinary medicine had the condition. Various other studies have shown that the number may be in the interval between 8% and 48%, varying with region and whether or not the subjects are circumcised. Lesions typically are asymptomatic and persist throughout life; however, they gradually may become less noticeable with increased age.