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What is Urticaria?

Urticaria is a type of skin rash that results from an allergic reaction or an abnormal immune response of the skin.

Urticaria is characterised by the transient appearance on the skin of lumpy red weals that have well defined edges with pale central areas. It can present acutely when the rash lasts for a few days and recurs infrequently and in a chronic form where widespread weals occur almost daily for a period of at least six weeks and longer.

It is also known as ‘nettle rash’ because the rash is similar to that caused by a nettle sting or 'hives' as 'hive' is another name for a weal.

More Information about this condition