What Is Urticaria?
7. Are Hives Contagious?
In rare circumstances, hives can be contagious, but this is only when the cause is a viral infection, which is why a doctor’s visit is always recommended when you experience sustained urticaria. Otherwise, hives are almost always an allergic or physiological reaction to some external stimuli. For example, some urticaria patients break out in hives because of certain foods or medications, but others have a skin reaction when they are exerting themselves and sweating.
The causes of urticaria vary a great deal, but most are not contagious. However, due to the minor risk of infection or virus, it is beneficial to see a physician so they can perform a skin test and blood test to determine if such factors are a concern.
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