Medically reviewed by Danielle Weiss, MD Thyroid disease can sometimes cause repeated bouts of an itchy skin rash known as ...

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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 ...

Skin reactions can be alarming, especially when they appear suddenly. Many people struggle to tell the difference between hives and a rash, but knowing the cause is the first step toward relief.

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