1.In most cases of chronic urticaria, an underlying trigger is not found. Hodgkin's disease may be accompanied by urticaria. Cold urticaria with cryoglobulinemia is seen in multiple myeloma.
5.While you obviously can't avoid an element that covers 70% of the planet and falls from the sky, people with aquagenic urticaria have to take some serious precautions when carrying out basic everyday tasks.