Hives rashes are not contagious, meaning you won’t develop the rash by touching hives on another person. However, some contagious infections can cause hives. Hives, or urticaria, causes welts on ...

Hives are a type of rash that results from an allergic reaction, insect bite, infection, and more. You can identify hives by pressing down on the bump — if it turns white, it's a hive.