Pediatric acute-onset neuropsychiatric syndrome (PANS) is defined by abrupt emergence of obsessive–compulsive behaviours and/or food restriction with concurrent cognitive and behavioural symptoms. Symptoms of obsessive–compulsive disorder and eating disorder frequently overlap in such cases, clouding diagnostic certainty and hypothesized etiologic factors. This case illustrates an atypical eating disorder presentation, resulting from PANS wherein a meticulous ruling out of organic causes andtimely institution of specific serotonin reuptake inhibitor facilitated remission. Through this case report the authors highlight the need of awareness of other medical practitioners regarding the symptomatology and presentation of PANS so as to facilitate early intervention in a collaborative approach.

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