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Effect of Diet in Chronic Spontaneous Urticaria: A Systematic Review.

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Published:1st Feb 2019
Author: Cornillier H, Giraudeau B, Samimi M, Munck S, Hacard F, Jonville-Bera AP et al.
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Ref.:Acta Derm Venereol. 2019;99(2):127-132.
DOI:10.2340/00015555-3015

Strategies for diets in chronic spontaneous urticaria (CSU) are controversial. This systematic review assessed the interest in diet for managing CSU. We searched for original reports in MEDLINE, EMBASE, CENTRAL and LILACS. Among the 278 reports screened, 20 were included, involving 1,734 patients. Reports described 3 types of systematic diet: pseudoallergen-free diet (n = 1,555 patients), low-histamine diet (n = 223) and diet without fish products (n = 47), which induced complete remission in 4.8%, 11.7% and 10.6% of patients, respectively, and partial remission in 37.0%, 43.9% and 4.3%. Eight reports described personalized exclusion diets (66 patients) adapted to symptoms/allergological test results and led to complete remission in 74.6% of patients, although the diagnosis of CSU was doubtful. No comparative randomized studies of diets were available. The only randomized studies were based on oral provocation tests with the suspected responsible diet.

Population and outcomes were heterogeneous. In conclusion, there is evidence for the benefit of diets in CSU only in individual patients with clinical symptoms. However, the level of evidence is low for the benefit of systematic diets in CSU because systematic double-blind controlled trials of diet are lacking.

 

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