My Brother used to get this HUGE boil on his inner thigh and the doctor would give my parents this Black tar medicine and it would go away but yes return a few times a year. I will ask My parents what it was. I was small and dont remember.
I know this has to worry you what does Doctor say?
aww they can be painful .where does she get them , all you can do it treat them has the Doctor given her any meds and cream ?