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The Conversation USA

What causes hives and how dangerous can they be? A nurse practitioner explains

  • Written by Patricia A. MacCulloch, Clinical Associate Professor of Nursing, UMass Lowell
imageThe appearance of hives can vary with skin color.BSIP/UIG Via Getty Images

Every year, about 20% of Americans will get hives – those itchy, red bumps or welts that can appear after a day in the garden, taking medication, being bitten by a bug or for no apparent reason at all. Patricia A. MacCulloch is a nurse practitioner and professor of...

Read more: What causes hives and how dangerous can they be? A nurse practitioner explains

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