what is a carbuncle boil
A carbuncle is a cluster of boils, draining pus onto the skin.It is usually caused by bacterial infection, most commonly with Staphylococcus aureus or Streptococcus pyogenes, which can turn lethal. However, the presence of a carbuncle is actually a sign that the immune system is working. carbuncle is made up of several skin boils. The infected mass is filled with fluid, pus and dead tissue.