Hi, what you have sound like an ingrown hair.Known as follicullitis.
Hello,
Without examination,confirmation of a diagnosis is tough,but it sounds like folliculitis or infected hair follicle. Pls keep the area clean and apply some topical antiseptics. Also wear loose-fitting cotton clothing and use an antibacterial soap or mild soap like dove.Avoid any kind of cosmetics. Topical antibiotics such as mupirocin or neomycin containing ointment are also useful.In case the symptoms persist then oral antibiotics may be needed.Pls consult a dermatologist in that case.
Also,then herpes,blood blisters and warts have to be ruled out.
Hope it helps.Kind regards.