Abstract
Nutritional therapy through exclusive enteral nutrition (EEN) is successful with Crohn’s disease (CD), but most patients relapse when returning to a normal diet. Personalized and sustainable diets over time have not been tried. This pioneering case report shows the successful response to the use of a skin prick test (SPT) with a 0.5 mm cutoff and a combination of parameters to guide the diet of a child with CD, ensuring continued remission and a regular diet over a follow-up period of 3 years. The 5-year-old patient had a history of chronic diarrhea. Laboratory showed anemia, hypoalbuminemia, high erythrocyte sedimentation rate (ESR), and fecal calprotectin (FCP) > 2,100 µg/g. Endoscopies revealed duodenal ulcer scar and ulcerative pancolitis. Simple endoscopic score for CD score (SES-CD) = 16 (severe). Pathology showed CD. EEN started with a polymeric formula, later moving to an elemental formula due to a suboptimal response. Medication included prednisolone, mesalazine, azathioprine, and methotrexate. Foods were introduced guided by the SPT and included 54 protein extracts from food tested every 3–4 months. The patient has clinical and histological remission despite having lamb, turkey, eggs, cereals (including wheat), and fish in his diet. FCP has been measured with every change in diet and maintained at < 100 µg/g with the reintroduction of food, with the exception of fish and eggs which, despite a negative SPT, gave mild symptoms and raised FCP to 223 µg/g. Both eggs and fish were successfully reintroduced (FCP < 100 µg/g) after 7 and 11 months respectively from failed reintroduction. This innovative approach based on SPT and strict clinical and follow-up inflammatory markers can potentially ensure remission, reintroducing foods with objective parameters, and improving the patient’s quality of life.
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