"A is a deep, necrotizing form of with involvement of the subcutaneous tissue. Several furuncles may coalesce to form a carbuncle. ' (S. aureus) is the causative agent. Predisposing factors are obesity, , prolonged sitting, tight irritating pants, or i. Recurrent furunculosis is the sequential occurrence of many furuncles. Nasal colonization with community-associated (CA-MRSA) interspersing the is a very strong risk factor for recurrent furunculosis. Antibiotics systemically are given in furuncles or carbuncles associated with surrounding or those >5 cm diameter and/or associated with fever or located on the forehead, nose, cheeks, or upper lid in recurrent furunculosis and immunocompromised patients."