Erythema, edema, warmth, pain
Can be associated with chronic illness, trauma, insect bites, allergen exposure, dental caries, radiation exposure
Consider severe illness or sepsis with systemic symptoms (fever, tachycardia, hypotension, AMS)
Facial cellulitis
Infectious
Blepharitis
Cellulitis
Periorbital cellulitis
Impetigo
Orbital cellulitis
Erysipelas