A rash in your vaginal area (vulva) may be caused by irritation of the skin from many sources, such as clothes rubbing against the skin. Rashes that occur without. What we think of as "vagina acne," can be caused by a variety of things. Folliculitis proper is caused by "inflammation of the hair follicles, which. Worried about bumps on your vagina or pubic area? Consider this your go-to guide to determining whether it's an ingrown hair, cyst, skin tag. "If it looks just like a pimple on your face, you'll know that's what it is," of the mucosal skin (the soft wet part inside the lips), advises Dunston.