Food allergies are basically caused by an overactive immune system. Sometimes foods contain proteins that your body recognizes as harmful. The body defends itself by releasing antibodies to fight them. These antibodies release histamines into the bloodstream, causing an allergic reaction that might include hives or tingling patches of skin.

What are hives?

Hives are itchy areas of inflamed skin which can occur anywhere on the body. They are typically described as red bumps or welts on the top layer of the skin. They may start in a small area and spread.

Itching can also be a preliminary sign of a significant allergy preceding anaphylaxis, which can cause death. For the treatment of itchy skin, you can purchase over-the-counter creams, such as hydrocortisone. Hydrocortisone takes away the itch and helps to reduce redness.


Allergies to shellfish can be specific or broad. They include those marine animals that have shells like lobster, crabs, and shrimp but also octopus, scallop and squid. Hives can occur and also swelling and gastrointestinal problems if you have an allergy to these kinds of foods.


Peanut allergies range from very mild to life-threatening. They start with either direct contact, cross-contact or inhalation. Hives and other similar skin reactions can occur after any of these types of exposures. A peanut allergy can also cause digestive problems and trouble breathing.

Eggs and dairy

Hives are very common with egg and milk allergies. Symptoms like hives can take as long as a few hours to manifest after exposure to the allergen.

Other symptoms might include gastrointestinal problems like cramping and vomiting. Nasal inflammation is also common. Sometimes with egg allergies, allergic asthma can occur causing breathing difficulties. Itchy eyes may also occur.

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