Unfortunately I have not come across any information on this subject. A. Voyeurism is one of the so-called paraphilias or disorders of sexual arousal. It involves the act of observing unsuspecting individuals, usually strangers, who are usually naked, in the process of disrobing, or engaging in sexual activity.
Masturbation usually occurs during, or shortly after, voyeuristic activities.
The onset of voyeurism is usually before the age of 15, and the course tends to be chronic. It is more common in men, but does occasionally occur in women. The exact prevalence of voyeurism, to my knowledge, has not been determined. Very few people with this disorder will present themselves for treatment, unless forced to do so. Voyeurism may co-occur with another paraphilia, exhibitionism.