Clinical presentation and management of food protein‐induced enterocolitis syndrome in 113 Swedish children

Background Food protein‐induced enterocolitis syndrome (FPIES) is a non‐IgE‐mediated food allergy causing severe acute gastrointestinal symptoms and lethargy, mainly affecting infants and young children. There are geographic variations in its clinical features. This study aimed to describe the clinical characteristics and management of FPIES in Swedish children. Methods The study included children who presented with acute FPIES during 2008–2017. All Swedish pediatric departments (n = 32) were invited to report their known patients. Data were collected through chart reviews and interviews with parents. Results Eighteen pediatric departments contributed, and 113 patients were included. Most had a family history of atopy (74%), and 51% had an atopic disease. Common trigger foods were cow's milk (26%), fish (25%), oat (22%), and rice (8%). Most patients (85%) reacted to a single food. The median age at first reaction was 3.9 months for cow's milk and 6.0 months for other foods (p