I am not sure but have you got it checked for cellulitis. Cellulitis is an acute infection of skin and soft tissues characterized by localized pain, swelling, tenderness, erythema, and warmth.It usually follows a break in the skin, such as a fissure, cut, laceration, insect bite, or puncture wound.
Bacteria causing cellulites include streptoccus,staphylococcus,pneumococcus,clostridium,vibrio etc. The high prevalence of community-acquired methicillin-resistant Staphylococcus aureus (MRSA) increases the chances of cellulites and recurrent abscesses.
Whether MRSA is causing cellulites in your case or not depends on the blood culture sensitivity report. Blood culture sensitivity is often done to find out the causative pathogen and its sensitivity to various antibiotics.
Please consult your dermatologist and discuss this option.
I sincerely hope that helps. Take care and please do keep me posted on how you are doing.