Dr. Charles "Pat" Davis, MD, PhD, is a board certified Emergency Medicine doctor who currently practices as a consultant and staff member for hospitals. He has a PhD in Microbiology (UT at Austin), and the MD (Univ. Texas Medical Branch, Galveston). He is a Clinical Professor (retired) in the Division of Emergency Medicine, UT Health Science Center at San Antonio, and has been the Chief of Emergency Medicine at UT Medical Branch and at UTHSCSA with over 250 publications.
If the doctor diagnoses cellulitis, you will be treated with antibiotics.
If you have an abscess, then the collection of pus will need to be drained. This may involve stitch removal or an incision to make a track so that pus can flow out or drain to the surface. You likely will also need antibiotics. Further home care will include soaking the infected area with clean warm towels three to four times a day to assist the healing process.
If your wound's edges separate, the wound may need to be left open to heal on its own. Your treatment will likely also include antibiotics.
If there is something in the wound (termed a foreign body that may be a piece of dirt, or splinter, or a broken needle or metal barb) that is causing the infection: This material will need to be removed by a physician.