cellulitis is defined as an infection in front of the orbital septum of the eye and is characterised by development of acute eyelid oedema, tenderness, warmth, chemosis and erythema. [1][2][3] This is a relatively common condition seen in the paediatric population. 4 Periorbital cellulitis has to be promptly distinguished from orbital cellulitis which is an infection occurring posterior to the orbital septum. 5,6,7 Periorbital cellulitis is usually associated with concurrent local pathologies like chalazion, ethmoid sinusitis, dacrocystitis, facial cellulitis, facial or dental surgical procedures, periocular trauma, impetigo and insect bites. 1,8 A thorough history, meticulous clinical examination and identification of risk factors are paramount in the management of this condition. 9 Treatment is predominantly medical with initiation of prompt antibiotic therapy and addressing the underlying pathology. 2 The aim of this study was to describe the epidemiology, clinical profile and outcome of children with periorbital cellulitis attending the paediatric emergency medicine department. We also wanted to determine the correlation of clinical severity index score 10 with development of complications. Materials and MethodsThis was a single-centre retrospective study based on data collected at the Children's Emergency department at KK Women's and Children's Hospital (KKH), Singapore between 2006 and 2016. The study was approved by the SingHealth Centralised Institutional Review Board (CIRB). The data collection was started by identifying all patients with discharge diagnosis of periorbital cellulitis or preseptal cellulitis from the discharge diagnosis and then recording information on: demography, symptoms, aetiology, clinical signs, treatment, follow-up and return visit.Clinical severity index score was calculated for all individual patients by a score validated by Linda Vu et al 10 which included systemic features and local features. All categorical variables were analysed using chi-squared test, while for continuous variables, independent t-test was used. Following this, univariate and multivariate logistic regression analyses were performed, with periorbital cellulitis as the primary outcome.
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