Urticaria is a disease of the skin characterized by edematous skin lesions, with delimited contours and an erythematous halo, generally evanescent and changing.

Women are more prone to suffer it, and appears mostly after adolescence. This allergy is accompanied, usually with itching.

The existing types of hives are:

• Acute: Allergy that disappears in less than six weeks from the appearance. The most frequent causes in this type of urticaria are: reactions to some drugs or to some foods; insect bites; infections, etc.
• Flashing: It occurs in the form of outbreaks, with a variable duration.
• Chronicle: Lasts more than six weeks. The exact cause is not known, but stress can be one of them.

The most common causes of the onset of this disease are those of acute urticaria. Mostly they are produced by eating food. The most likely to cause this type of allergies are: eggs, seafood, milk, fish, chocolate or nuts.

Some of the symptoms are:

• Redness of the skin
• Itching
• Fever
• Pain in the joints.
• Headache
• Tachycardia
• Hypotension
• Constipation
• Nausea and vomiting.
• Rhinitis
• Asthma
• Abdominal pain.

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