Cellulitis is an acute, spreading infection of the deeper dermis and subcutaneous tissue, usually complicating a wound, ulcer, or dermatosis. It is characterized by rapidly expanding areas of edema, erythema, and warmth, sometimes accompanied by lymphangitis and inflammation of the regional lymph nodes. Unlike erysipelas which affects the upper dermis and the superficial lymphatics, cellulitis lacks sharp demarcation from uninvolved skin and usually does not present with an indurated, "peau d'orange" surface with a raised border. The diagnosis of cellulitis is based on the morphology of lesion and the clinical setting.
Cellulitis physical examination
Erysipelas physical examination
Cellulitis laboratory tests
Psoriasis physical examination
Eczema physical examination
Dermatophytosis physical examination
Gangrene physical examination
DRESS syndrome physical examination