urticaria
"This medication is excellent! I have had horrible angioedema (a type of urticaria where the hives form under the skin) since I was ten years old from an autoimmune disease and have gone through several different medications, but this once has worked the most effectively. And I can tell how well it works because when I forget to take it, the hives show up within about 12 hours after the missed dose and once I remember to take the missed dose, within about two hours, it feels as though I never had angioedema at all."