Urticaria, commonly known as hives, are itchy rashes characterised by redness and swelling of the skin. These rashes may resemble mosquito bites of varying size.


When rashes develop around loose tissue such as the eyes or lips, the affected area may swell too. This reaction is called angioedema as shown in the images below.

Urticaria can be categorised into acute and chronic. Acute urticaria is the most frequent type of urticaria seen in children and each episode lasts for less than six weeks. During this period, the urticaria may increase and decrease in size and travel to different areas of the body. Chronic urticaria lasts for more than six weeks.
Urticaria is common and up to 20% of people will develop an episode during their lifetime.