Hives from a food allergy can last anywhere from a few hours to several weeks, depending on the severity of the allergic reaction and individual factors. foods.edu.vn offers comprehensive insights into managing these allergic reactions. Understanding the duration, causes, and treatments for hives can significantly improve your quality of life. Explore our resources on allergic reactions, food sensitivities, and skin health to find effective strategies for managing hives and related symptoms, including angioedema, chronic urticaria, and anaphylaxis.
1. What Are Hives and Their Characteristics?
Hives, also known as urticaria, are itchy, raised welts on the skin that can appear pink or red. According to the Australasian Society of Clinical Immunology and Allergy (ASCIA), hives can range in size from small pinheads to large dinner plates. They often resemble mosquito bites and typically last for up to two hours, but can come and go for days or weeks. Hives result from the release of histamine in the skin, leading to itching, blood vessel expansion, and fluid leakage, causing redness and swelling. About 20% of people will experience hives at some point in their lives.
