hi im a 49 year old female with chronic urticaria for 17years i have been taking prednisolone for 15years and huge doses of strong antihistamines ie montelukast doxepin atarax fexfenodine, i take a combination daily of these amounting to 14 tablets per day however they only mask the hives they come every day all over arms legs trunk even in hair..... im at my wits end im thinking i may be non responsive to any combo of antihistamine only the pred gives any releif butttttttt this is no good i know please help