What is Chronic Urticaria?

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Chronic urticaria is a group of changes to the skin that consists of the appearance of wheals (hives) on the whole body, which cause itching and are sometimes accompanied by swelling (angioedema). 

Types of Chronic Urticaria

Urticaria is classified depending on the duration of the lesions: 

Persona con urticaria crónica de menos seis meses

Acute urticaria. If it lasts for less than six weeks. 

Persona con urticaria crónica de más de seis semanas

Chronic urticaria. When the lesions last for six weeks or more and appear daily or almost daily.  

  • Chronic urticarias can be classified as spontaneous, if there are no triggers, or inducible, if there are triggers (water, cold, pressure, friction, vibration, temperature increase or physical exercise). 

alimentos, medicamentos, desencadenantes alérgicos

Urticarias due to an allergic trigger (foods or medicines) require investigation by a specialist to confirm the cause and be able to avoid contact to prevent the reaction. 

How many people are affected by Chronic Urticaria?

Urticaria affects people of all ages (children and adults), although it is more common in adults, especially in women, in its chronic form. Approximately 1 in 5 people in the world will exerience an episode of acute urticaria over their lives, while the chronic form of the disease has an estimated annual prevalence of approximately 1% of the population. It is estimated that there are more than 250,000 people in Spain with chronic urticaria. 

What is an allergy?

Consulta toda la información relacionada con Allergy

Read more

Substantiated information by:

Paula Ribó Gonzalez

Published: 25 May 2020
Updated: 25 May 2020


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