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Preseptal cellulitis — RACP Paediatrics MCQ

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EasyIDPreseptal cellulitisRACP Paediatrics

A 3-year-old presents with unilateral periorbital swelling and erythema. There is no proptosis, ophthalmoplegia, or visual disturbance. The child had an insect bite near the eye 2 days ago. Temperature is 38°C. What is the most likely diagnosis?

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Correct answer: A — Periorbital (preseptal) cellulitis

Unilateral periorbital swelling following local skin trauma (insect bite) without orbital signs (proptosis, restricted eye movements, visual changes) is preseptal (periorbital) cellulitis. It is the more common and less serious form. Mild cases in well children can be treated with oral antibiotics with close follow-up.

Reference: RCH Melbourne – 2023 – Periorbital and Orbital Cellulitis CPG