My girls had this last year. One had a mild case, the other was the severe drug resistant type. I was told that it would have been worse for her had I not forced the puss out of it( I know gross). Had I left it till the next morning when I could get her to the doctor they would have hospitalized her. Her arm swelled up really really bad around what looked like an insect bite! They told me at that time that ANY cuts or bites--no matter how small or seemingly insignificant, should be cleaned and treated with a triple antibiotic to try to prevent it from turning into staph!