Urticaria (hives) is a skin rash presenting as an itchy red rash or lumps called weals. Depending on the trigger, hives can last in duration from a few hours to a week.

Ordinary urticaria Spontaneous or 'ordinary' urticaria is divided into acute urticaria (lasting a few hours or days or up to six weeks) and chronic urticaria (persisting more than six weeks, and …

Acute urticaria is urticaria (hives) that is present for less than six weeks. It is characterised by weals and sometimes angioedema, and resolves within hours to days.

What is chronic urticaria? Chronic urticaria is defined as daily itchy wealing of the skin for more than six weeks. Chronic urticaria may be spontaneous or inducible, which may co-exist.

May 23, 2018 · Urticaria affects up to one in four people at some time in their lives and can be classified by duration, acute or chronic, and by cause, whether spontaneous or inducible. Two …

Cholinergic urticaria (heat bumps) is characterised by short-lived hives that occur due to sweating. Stimuli that can cause excessive sweating include exercise, spicy food ingestion, and …

Sep 9, 2024 · Urticaria affects up to one in four people at some time in their lives and is classified by duration, acute or chronic, and cause, whether spontaneous or inducible. Acute urticaria is …

Apr 4, 2019 · What is urticaria in children? Urticaria refers to a group of conditions in which weals (hives) or angioedema (swelling) develop in the skin. It is very common in children. A weal is a …

Images of urticaria, angioedema (hives). Authoritative facts about the skin from DermNet New Zealand.

Contact urticaria is an immediate but transient localised swelling and redness that occurs on the skin after direct contact with an offending substance. Contact urticaria should be distinguished …