Urticaria (Hives): a complete overview — DermNet 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
Urticaria and urticaria-like conditions - DermNet 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 sometimes life-long) Acute urticaria is self-limiting and often related to infection, and less often due to food or is drug-induced
Chronic urticaria - DermNet 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
Chronic spontaneous urticaria - DermNet 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 or more different subtypes of urticaria may co-exist in one person Acute urticaria is the daily or episodic occurrence of weals, angioedema, or both, for under 6 weeks
Cholinergic Urticaria: Causes, Treatment, and Images - DermNet 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 emotional stress
Chronic inducible urticaria - DermNet 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 the daily or episodic occurrence of weals, angioedema, or both for less than 6 weeks Causes can include infections and allergies, but more often, the cause is
Heat urticaria - DermNet What is heat urticaria? Heat urticaria is a rare type of physical or chronic inducible urticaria It is also called contact heat urticaria and localised heat urticaria Heat urticaria occurs following the direct contact of a warm stimulus to the skin The onset of urticaria is typically rapid (within minutes) and the urticaria resolves within 1–2 hours It can also cause angioedema and
Urticaria in children - DermNet 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 superficial swelling, usually pale or skin-coloured It is often surrounded by an area of erythema and can last from a few minutes to 24 hours