antihistamine updosing

Clinical Definition Urticaria is a mast cell-driven vascular reaction of the skin characterized by the development of wheals (hives), angioedema, or both. A wheal is defined as a superficial, pruritic, evanescent swelling of the skin that typically resolves within 24 hours without scarring. Clinically, it is classified based on duration into Acute Urticaria (< 6...