What is the role of neurologic triggers in chronic urticaria?
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Neurologic factors may play a causative role. An Italian study reported an association between chronic urticaria and fibromyalgia, and the authors suggested that chronic urticaria may be a consequence of fibromyalgia-neurogenic skin inflammation.
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@mina-s Some patients report the onset of acute urticaria associated with the consumption of certain foods, such as shellfish, eggs, nuts, strawberries, or certain baked goods. However, food allergy is rarely the basis of chronic urticaria. Contactants may give rise to contact urticaria syndrome, a term referring to the onset of urticaria within 30-60 minutes of contact with an inciting agent. The lesions may be localized or generalized. Precipitating agents include latex (especially in healthcare workers), plants, animals (eg, caterpillars, dander), medications, and food (eg, fish, garlic, onions, tomato)