От дисбактериоза не бывает хронической крапивницы. Передавайте привет аллергологу. Анализы могут быть вообще все в норме, а хроническая крапивница - присутствовать.
Laboratory Findings
Laboratory studies are not likely to be helpful in the evaluation of acute or chronic urticaria. The most common causes of acute urticaria are foods, infections, and medications. The cause of chronic urticaria is often not found. In patients with individual slightly purpuric lesions that persist past 24 hours, skin biopsy may confirm urticarial vasculitis. An autologous serum test may detect patients with an autoimmune basis for their chronic urticaria.
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