Minora or majora?
Is this on the minora or majora? On the minora era are a variety of mucous glands that may become obstructed or occluded causi g a small pimple like bump.
On the majora, sebaceous glands or hair follicles may also be responsible due to ingrown hairs or cysts. If this does not resolve discuss with your physician for a review of other more obscure causes.