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Can specific vessel‐based papulopustular lesions of Behçet's disease be differentiated from nonspecific follicular‐based lesions clinically?

Background  Although papulopustular lesions are one of the diagnostic criteria for Behçet's disease, controversy exists as to the nature of these lesions. Specific vessel‐based papulopustular lesions as well as nonspecific follicular lesions may be seen in patients with Behçet's disease. Some authors suggest that papulopustular lesions should be considered a positive criterion only if they exhibit a vessel‐based neutrophilic reaction.