Hi, Having chronic urticaria is a problem to cure as there might be having multiple causative factors playing role. This can be due to internal allergy like worm infestation, some protozoal infection, diabetes, thyroid etc. External causes might be allergy to soap, detergent, perfume, duo, body wash, body lotion, clothes ,some foods, vegetables etc. By trial and error you have to find out the allergen causing this urticaria. Meanwhile you can give her Benadryl, Levo-cetrizine for few days. Go for one ati-worm medicine course. Rule out thyroid, diabetes. Ok and take care.