Pruritus vulvae is pruritus of the vulva

Vulva

The vulva consists of the external genital organs of the female mammal. This article deals with the vulva of the human being, although the structures are similar for other mammals....

, which is the counterpart of pruritus scroti

Pruritus scroti

Pruritus scroti is itchiness of the scrotum that may be secondary to an infectious cause.-References:...

, and may be caused by many different causes.

Causes

This condition is a symptom of an underlying condition more often than it is a primary condition.
Vulva irritation can be caused by any moisture left on the skin. This moisture may be perspiration, urine, vaginal discharge or small amounts of stool.
It may be caused by vaginal infections, vulvitis, HPV (Human Papilloma Virus) infection, anal incontinence, Bowen's disease, or dietary irritants (caffeine, tomatoes, and peanuts).

Treatment with antibiotics can lead to a yeast infection and irritation of the vulva.
Some diseases increase the possibility of yeast infections, such as diabetes mellitus or HIV infection.

Chronic inflammation of the vulva predisposes to the development of premalignant or malignant changes.