Folliculitis
Its a painful & itchy condition in which hair root got infected and inflamed due to bacterial infection.
Most commonly seen in, females after waxing, obese people, trauma to the skin, immunocompromised conditions, long term use of antibiotics, hot water exposure etc..
Staphylococcal is the most common bacteria for such kind of infection, & is responsible for pus formation.
short course of antibiotics can cure almost all types of folliculitis whether deep or superficial, although superficial infection sometimes cured by itself.