Questionable razor bumps

[MaMa138]

My 13 year old granddaughter recently informed her mother and I that while spending the night with a friend she used her friend's razor to shave her legs and armpits.  She admits the razor looked old but doesn't believe it had any rust on it.  Within a few days she developed ugly, large bumps in her armpits which eventually filled with pus.  She has none of these bumps on her legs.  It has been about two weeks now and the bumps are just now showing improvement after we applied topical ointments.  However, they are still not gone.  Should we be alarmed or is this just a bad skin rash?  And yes, my granddaughter received the "NEVER  use anyone else's razor EVER speech"!

[MaMa138]

Thanks for the info.  Her bumps are improving.  Yesterday we went to the beach and the salt water actually helped!

[Chreey]

sounds like they maybe ingrown hairs or the hair follicles got infected. i get them sometimes to in arm pits and around bikini area. they can be very painful. and what i have to do is sterilize a needle and drain pcus and then put drawing salve to get remaining infection out. but if just using topical meds is helping i would just continue to do that. unfortunantly i haven't found anything that really stops this from happening after shaving. I have tried applying alcohol after shaving they do make stuff for bikini area to apply after shaving so you dont get bumps don't see why she couldn't use on her arm pits it may work for her. hopefully this has been helpful.