Cellulitis is a bacterial infection involving the inner layers of the skin. It specifically affects the dermis and subcutaneous fat. Signs and symptoms include an area of redness which increases in size over a couple of days. The borders of the area of redness are generally not sharp and the skin may be swollen.
The typical signs and symptoms of cellulitis is an area which is red, hot, and painful. The photos shown here of are of mild to moderate cases, and are not representative of earlier stages of the condition.
Cellulitis is most often a clinical diagnosis, readily identified in many people by history and physical examination alone, with rapidly spreading areas of cutaneous edema, redness and heat, occasionally associated with inflammation of regional lymph nodes. While classically distinguished as a separate entity from erysipelas by spreading more deeply to involve the subcutaneous tissues, many clinicians may classify erysipelas as cellulitis.
During 64 months, 107 episodes of pneumococcal bacteremia were identified in 107 patients. There were 63 (59%) male and 44 (41%) female patients. Nearly all (98%) of the episodes were of community-acquired disease. Eighty-one patients (76%) were adults (mean age 64 years). Twenty-six patients (24%) were children (mean age 26 months, range 2–108 months).