Cellulitis is an infection of the skin and underlying tissue caused by streptococcal, staphylococcal, or other bacteria. This infection is serious and should receive immediate medical attention. Cellulitis is usually worse for those who have reduced resistance to infection because of disorders such as diabetes or a weak immune system. Cellulitis most frequently occurs on the face, arms, or legs, but it can occur anywhere. Bacteria enter the body through a cut or sore.
Enzymes produced by the bacteria destroy skin cells.
The infection spreads over the area for about 2 days and can involve the tissues below the skin. Your lymph glands may become swollen and tender. You may have a fever and feel ill. If left untreated, the amount of bacteria produced can reach life-threatening levels. Orbital cellulitis, a particularly dangerous infection, usually develops when bacteria enter the soft tissue around the eye socket from the sinuses or a boil near the eye.