There have been a number of case reports published recently describing women who complain of persistent genital arousal. Most of these papers do not report medical data or observations from genital examination. We report in such detail on six cases of persistent genital arousal disorder (PGAD) in women. We further advance the hypothesis that in many cases the objective genital component may be induced by a variety of psychophysiological and pathological factors such as anxiety, genital prolapses and dermatoses. Genital engorgement so produced may not be continuous but when present may be enhanced and perpetuated by both anxiety focussed on the genitals and masturbation used in an attempt to relieve the sensations. Premorbid affective psychological illness negatively colours the subjective perception of this genital engorgement, leading to either elicitation or maintenance of PGAD. We discuss this hypothesis in relation to our six cases.