Vibrations
There are people who develop hives after experiencing vibrations on their skin. Aside from hives, sufferers of vibratory urticaria can experience flushing, headaches, and a metallic taste in the mouth following exposure. Though these symptoms only last for up to an hour, people can experience multiple episodes a day. Triggers can include rubbing a towel on your skin, riding a bike, or even clapping your hands. Unlike aquagenic urticaria, researchers have been able to discover an inherited mutation that explains at least some cases.
