आइजिइ-रोखोम एन्टबदिफोरनि गेजेरजों नङाब्लाबो जायहा आरटिकारिया आरो एनाफिलाक्सिसआव दैदेननाय बिफाव दं थि दाजेमारिया रोखानङै आरो बेयो इमिउनलजियारि जानो हागौ।
The precise mechanism is unclear and it could be immunologic, although not through the IgE-type antibodies that have the leading role in urticaria and anaphylaxis.