Definition of Carbuncle:

A carbuncle is a skin infection that often involves a group of hair follicles. The infected material forms a lump, which occurs deep in the skin and may contain pus.

When you have more than one carbuncle, the condition is called carbunculosis.

See also: Skin lesion

Causes, incidence, and risk factors:

Most carbuncles are caused by the bacteria staphylococcus aureus. The infection is contagious and may spread to other areas of the body or other people.

A carbuncle is made up of several skin boils (furuncles). The infected mass is filled with fluid, pus, and dead tissue. Fluid may drain out of the carbuncle, but sometimes the mass is so deep that it cannot drain on its own.

Carbuncles may develop anywhere, but they are most common on the back and the nape of the neck. Men get carbuncles more often than women.

Because the condition is contagious, several family members may develop carbuncles at the same time. Often, the cause of a carbuncle cannot be determined.

You are more likely to get a carbuncle if you have:

• Friction from clothing or shaving
• Poor hygiene
• Poor overall health

Persons with diabetes, dermatitis, and weakened immune systems are more likely to develop staph infections that can cause cabuncles.