Hi,
Thanks for using Healthcaremagic,
These are due to infection by
staphylococcus commonly due to perspiration and moisture may start from hair follicle.
This infection can cause collection of pus or may involve local Lymph nodes.
Treatment involves judicious use of antibiotics, if the one you are using is not tolerated then alternative can be used.
To reduce pain and swelling
analgesic and anti inflammatory drugs are commonly used.
Abscess formation may require surgical
drainage to remove pus and repeated dressings are required for healing and keep personal hygiene and keep area dry as far as possible.
If problem is recurrent one then possibility of
Hidradenitis suppurativa condition pus collection occurs repeatedly.
Hope this is useful to you.
Take care.
Good Luck.
Dr.Akhilesh Dubey M.D