When the infection is severe, usually a doctor first gives an antibiotic by injection. Cellulitis Cellulitis is a spreading infection in, and sometimes beneath, the deep layers of the skin. Cellulitis most often results from a streptococcal infection or, particularly after a wound occurs, a staphylococcal infection. However, many other bacteria can cause cellulitis, especially after bites by humans or animals or after injuries in the water. The infection is most common on the legs and often begins with skin damage from a minor injury, a sore, or a fungal infection between the toes.
Cellulitis produces swelling, tenderness, warmth, and redness.
Some areas may look bruised, and small blisters may develop. Symptoms of the infection may include fever, chills, headache, and more serious complications such as confusion, low blood pressure, and rapid heartbeat. Cellulitis is usually easy for doctors to recognize, but identifying the bacteria causing the infection is more difficult. Treatment Prompt treatment can prevent the infection from spreading rapidly and reaching the blood and other organs. Cellulitis is often treated with penicillin or a penicillin-type drug, such as dicloxacillin.