I'm 24 year old male and i've been having boils for the past 6 months. I've most common antibiotics like lincomycin, erythromycin, ampilox,ciprofloxacin, levofloxacin,gentamycin, zinnart.i went for a wound swab and there was heavy growth of pseudomonas spp, then I started the zinnart injection. For a few weeks I haven't had boil but yesterday one popped up close to the armpit. What treatment should I take now.