Hello, Welcome to HCM, The history and symptoms are suggestive of some allergic manifestation. The allergens like dust, food ,pollen and mites will stimulates the mast cells to release histamine which is the marker of allergy and produces these weird symptoms of generalized hives. As your doctor has prescribed the antihistamines and the the steroid which helps to control the symptoms but prolong use of celestamin should be discouraged as it has is own side effects. I would suggest you to identify the allergen causing these symptoms by undergoing skin prick test (SPT) and avoid exposing to these allergens. Otherwise you can prefer immunotherapy either with subcutaneous immunotherapy (SCIT) or sublingual immunotherapy (SLIT). Thank you.