Boils on face and groin before period

Hi Anon - It is impossible to diagnose a condition over the Internet but I suggest it would be good to learn more about hidradenitis suppurativa, a condition with boil-like lumps which tend to worsen around the time of a woman's cycle.
  This chronic skin condition  is characterized by abscesses, blackheads, inflammation, lesions and scarring. HS forms painful clusters around the arm pits, the anal area, and the groin. It occurs in places where sweat glands are present, or other skin-to-skin contact areas such as under the breast or even the folds of eyelids.Numerous pus-filled lumps form, creating pockets as large as baseballs making it difficult to walk or raise one’s arm. These abscesses may persist for years, flaring up, draining, spreading and creating wounds that do not heal.

If you do think you have this condition, or if your symptoms worsen, you will need to seek attention from  your healthcare provider.

Best,

Pat