II. Pathophysiology
- Immune-mediated erythematous rash
III. Signs
- Sun sensitive, erythematous rash
- Butterfly-shape appearance
- Involves both cheeks and variably the bridge of nose
IV. Differential Diagnosis: Miscellaneous
V. Differential Diagnosis: Infection
- Facial Erysipelas (Group A Streptococcal Cellulitis)
- Facial Staphylococcus aureusCellulitis
- Parvovirus B19 infection (slapped cheek appearance)
- Dental Abscess extension
- Wells’ syndrome (Eosinophilic Cellulitis)