C C26715 Cellulitis Cellulitis Inflammation of the dermis and subcutaneous, most often caused by a bacterial infection. Symptoms include erythema, edema, and pain to the affected area. C2890 Bacterial Disease C99147 Neonatal Research Network Terminology C C99000 Orbital Cellulitis Orbital Cellulitis Inflammation of the eye tissues posterior to the orbital septum, and generally secondary to an infection spread from adjacent sinuses. Signs and symptoms of the affected eye include sudden loss of vision, erythema, edema, decreased eye movement, and pain. Treatment is conducted via intravenous antibiotics, observation, and surgical intervention when necessary. C26715 Cellulitis C99147 Neonatal Research Network Terminology