Carbuncle

Description An abscess (collect...

Description

An abscess (collection of pus caused by a bacterial infection) that is larger than a boil—it may be as small as a peanut or as large as a golf ball. The infection arises from hair follicles. The most common kind of bacteria causing an abscess is Staphylococcus aureus. A more dangerous, antibiotic-resistant form of Staphylococcus aureus, called MRSA (methicillin resistant Staphylococcus aureus), is becoming more common. Abscesses can occur anywhere on the body but are more commonly found on the back, neck or in skin areas that are shaved frequently. The infection can be contagious and is more common in those people with diabetes or other disorders that depress the immune system.

Symptoms

Swollen red area of skin that is tender. The affected area is warm to the touch. There may be a white center and oozing of pus. Associated symptoms may include fatigue, fever, and nausea.

Tests

Common tests used for diagnosis and treatment

Workup:
A history and physical will be done. No other tests are generally necessary.

Tests:
Wound culture

Specialists:
Internal Medicine, Dermatology, Pediatrics, Family Practice, Telemedicine Dermatology

Treatment

Drainage of the material in the carbuncle must occur for complete recovery. This can occur spontaneously and can be helped by placing a warm moist cloth over the area. At times this is not successful, requiring a health professional to open the area with a small scalpel, to drain the pus out. Antibiotics may be prescribed by mouth such as cephalexin (Keflex), clindamycin (Cleocin), or erythromycin (Ery-Tab). If the provider is concerned about MRSA (methicillin resistant staphylococcus aureus) sulfamethoxazole/trimethoprim (Bactrim, Septra) or linezolid (Zyvox) may be prescribed. At times a topical antibiotic such as mupirocin (Bactroban) may be administered.