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Periorbital Cellulitis Caused by Methicillin-Resistant Staph aureus (MRSA)

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MRSA: In most instances of severe skin and adjoining structure infection, assume MRSA and choose initial antibiotics accordingly.

A 32-year-old man presents with the acute onset of a “face sore” and tender swelling of the ipsilateral eye. He works as a gardener and thinks that he poked his face with a tree branch about 3 days previously. He feels “feverish” and has anorexia.

Key point: The entire picture is consistent with traumatic ecthyma below the eye, followed by a cellulitis involving the periorbital soft tissue. The absence of pruritus speaks against the diagnosis of acute contact dermatitis-another common cause of striking periorbital swelling.

Treatment: Because of the patient’s constitutional symptoms (and an objective temperature of 101.5°F accompanied by leukocytosis), the patient was admitted for parenteral administration of antibiotics. Culture from the infraorbital crusted erosion yielded pure growth of methicillin-resistant Staphylococcus aureus (MRSA).

Note: In most instances of severe skin and adjoining structure infection, it is best to assume that MRSA is present and to choose initial antibiotic(s) accordingly.

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