Hives

Hives (Urticaria): What Canadians Should Know for First Aid and Workplace Safety Hives—medically known as urticaria—are raised, itchy welts that can appear suddenly on the skin. Many Canadians assume hives are always caused by food allergies or products like soap or detergent. While allergies can be a trigger, hives are often linked to other causes, […]

Understanding Hives (Urticaria) and Common Canadian Triggers Hives are raised, itchy patches or welts on the skin caused by fluid shifting into the upper layers of skin. They can appear suddenly, vary in size, resemble mosquito bites, and move or fade within hours. While often mild and temporary, hives can cause significant discomfort, especially if