In most cases, cellulitis in the lower extremities should disappear within seven to 10 days after starting treatment with antibiotics. People who suffer from pre-existing medical conditions such as an impaired immune system, chronic disease, or high blood pressure, may require a longer healing time with hospitalization and intravenous antibiotics
In severe infections, cellulitis can spread and cause complications such as blood and bone infections, gangrene that causes tissue death, abscess formation, and inflammation of the lymph nodes and vessels.
Cellulitis is caused by a bacteria that can enter the lower legs through a break in the skin. The infected area becomes red, hot and painful. Fever and fatigue can also be present. Risk factors include obesity and advanced age.