Allergic Reaction Causes Hives. This is known as a trigger. Hives can occur when too much histamine is released into the body by the immune system. The following symptoms may indicate angioedema. Food allergy is an immune system reaction that occurs soon after eating a certain food.
When an allergic skin reaction occurs the body releases histamine causing small blood vessels in the skin to leak leading to swelling and causing a rash. Other foods that can cause hives include milk eggs shellfish and peanuts and tree nuts. In some people overheating can cause a similar histamine reaction to allergy triggers causing outbreaks of hives. This often is caused by an allergic reaction. The following symptoms may indicate angioedema. Heat hives usually disappear about an hour after they show up though like other hives they can last up to a day on the skin and can be extra troublesome when they combine with other summertime allergies.
It can be caused by allergic reactions medications or a hereditary deficiency of some enzymes.
In rare cases hives may be accompanied by angioedema. In rare cases hives may be accompanied by angioedema. In some people a food allergy can cause severe symptoms or even a life-threatening reaction known as anaphylaxis. Other foods that can cause hives include milk eggs shellfish and peanuts and tree nuts. Hives can result from an allergic reaction temperature extremes infections stress and certain illnesses. In some people overheating can cause a similar histamine reaction to allergy triggers causing outbreaks of hives.