\" \" Hives cause red, itchy, raised welts that pop up on the skin in varying shapes and sizes. Many other skin conditions have these same symptoms and can be mistaken for hives. They're red, itchy, raised welts that pop up on the skin in varying shapes and sizes [source: Rockoff]. So it's easy to mistake any skin issue with red, itchy welts as hives because symptoms are relatively generic and common among many skin disorders. Read on to learn about five common skin disorders that look and feel a lot like hives.