{"id":9423,"date":"2024-08-22T02:02:31","date_gmt":"2024-08-21T23:02:31","guid":{"rendered":"https:\/\/medilab.km.ua\/?p=9423"},"modified":"2026-04-20T18:55:28","modified_gmt":"2026-04-20T15:55:28","slug":"kropyv-yanka-prychyny-symptoms-ta-shho-dobyty-yakshho-vysyp-ne-znykaye","status":"publish","type":"post","link":"https:\/\/medilab.km.ua\/en\/kropyv-yanka-prychyny-symptoms-ta-shho-dobyty-yakshho-vysyp-ne-znykaye\/","title":{"rendered":"Hives: Causes, Symptoms, and What to Do If the Rash Doesn't Go Away"},"content":{"rendered":"
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Skin redness, itching, and sudden blisters that look like a nettle burn \u2014 sound familiar?<\/strong> If so, you may have experienced hives, an allergic reaction that can occur at any age and for a variety of reasons. It often comes on suddenly, causing severe discomfort and even panic, especially when the rash spreads throughout the body or is accompanied by swelling.<\/p>\n

Hives are not just a rash, they are a sign that the body is responding to a stimulus or internal imbalance<\/strong>. Sometimes it goes away on its own, and sometimes it becomes chronic, requiring careful diagnosis and long-term treatment.<\/p>\n

What is hives?<\/h2>\n

Hives (urticaria) is allergic or pseudoallergic reaction<\/strong>, which appears as red or pink blisters that are raised above the skin and are accompanied by severe itching. The rash usually disappears within 24 hours, but new elements may appear.<\/p>\n

Blisters are formed due to the release of histamine and other mediators from skin cells, which dilate blood vessels and cause swelling of the dermis.<\/p>\n

Causes of occurrence<\/h2>\n

Hives can be sharp<\/strong> (up to 6 weeks) or chronic<\/strong> (over 6 weeks). The main causes include:<\/p>\n