Ingrown hair: If you shave, pluck or wax pubic hairs, you increase your risk for an ingrown pubic hair. That can cause a small, round, sometimes itchy or painful, bump that resembles a pimple. The bump may be filled with pus.. It typically forms as a lump or sore on the vulva, often causing itching.
I thinks it's the minora, not the lips of the vagina but the outer bits have a red lump on one side, it's not madly itchy but it is annoying. So, di.
Folliculitis appears as small, red, and sometimes painful bumps caused by bacteria that infect a hair follicle. It can occur on the labia majora. This can happen because of shaving, waxing, or even friction.