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). [ Ссылка ]
![](https://i.ytimg.com/vi/6koYYVgQMRc/mqdefault.jpg)
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). [ Ссылка ]