The skin contact with an irritant results in itchy rash within minutes to an hour. They disappear within twenty-four hours, usually within a few hours. Contact urticaria is also known as nettle rash or hives. It is typified by the wheal (swellings) and flare at the site of contact. The affected person may suffer from itching, tingling or burning sensations.
There are other types of urticaria. This includes immune sensitised reaction and happens in people who have previously become sensitised to a causative agent (eg latex protein in rubber gloves). This type of reaction is also called ACD.
