Urticaria on its own is not a serious condition. In these cases, the raised areas or weals last longer than 24 hours, are more painful, and can leave a bruise.
acute urticaria – if the rash clears completely within six weeks (most cases last 24 to 48 hours).
The raised areas can range from a few millimetres to the size of a hand.
Urticaria rash can be in one place or spread through the body
