Your symptoms suggest Chronic Urticaria or a severe localized allergy. Laveta M only suppresses the symptoms; it does not cure the underlying cause. To find a permanent solution, you must identify the trigger. I strongly advise consulting a dermatologist or allergist. They will likely recommend blood tests like an absolute eosinophil count (AEC), total IgE levels, a thyroid profile, and a comprehensive allergy panel (skin prick or patch test). Identifying and avoiding the specific allergen or underlying condition is the key to stopping this medication permanently.