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. 2016 Oct 14;6(10):e012378. doi: 10.1136/bmjopen-2016-012378

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Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/

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Rates of refractory disease according to current treatment and disease severity. CSU, chronic spontaneous urticaria; H2AH, H₂-antihistamine; LTRA, leukotriene receptor antagonist; nsAH, non-sedating antihistamine.