Satisfactory response of a back carbuncle to 5-aminolevulinic acid (ALA) photodynamic therapy: A case report.

Carbuncle, a collection of interconnected furuncles with multiple pustular openings, is usually caused by Staphylococcus aureus (S. aureus). In this condition, both skin and subcutaneous tissue of the lesion show severe inflammation. It often occurs in immunocompromized patients such as those with diabetes, nephritis, malnutrition, heart failure, hypogammaglobulinemia, exfoliative dermatitis, or pemphigus or those using corticosteroids for long-term. Antibiotics and aggressive debridement are the primary recommended treatments for carbuncle. We report a case of carbuncle that received satisfactory response, in which the inflammation subsided and the wound healed after the administration of ALA photodynamic therapy for three times.