Vulvitis is inflammation of the external genital organs of the female (the vulva). The vulva includes the labia, clitoris, and entrance to the vagina (the vestibule of the vagina). An inflammation of the vulva is referred to as vulvitis. Vulvitis, like vaginitis, may be caused by a number of different infections. Because the vulva is also often inflamed when there is inflammation of the vagina, vaginitis is sometimes referred to as vulvovaginitis.