Topical antiseptic treatment and topical antibiotics such as
mupirocin or neomycin containing ointment is very useful. If still the lumps persist then specific treatment like antibiotics, vit A supplements, corticosteroid injections, isotretinoin, antiandrogens and sometimes excision and drainage ,laser therapy and radiotherapy are found useful.
Hope it helps. Take care and please do keep me posted on how you are doing or if you have any additional queries. Kind regards.