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Hives, or urticaria, is a form of skin rash with red, raised, itchy bumps. [1] They may also burn or sting. [2] Hives can appear anywhere on the surface of the skin. Whether the trigger is allergic or not, a complex release of inflammatory mediators, including histamine from cutaneous mast cells, results in fluid leakage from superficial blood ...
“Acid reflux, often known as heartburn, happens when stomach acid travels back up into the esophagus, causing a burning feeling in the chest or throat,” says Julie Lichtman, RD, LDN, a ...
Heartburn, also known as pyrosis, cardialgia or acid indigestion, [2] is a burning sensation in the central chest or upper central abdomen. [3] [4] [5] Heartburn is usually due to regurgitation of gastric acid (gastric reflux) into the esophagus. It is the major symptom of gastroesophageal reflux disease (GERD). [6]
Normally, histamine acts on H 2 to stimulate acid secretion; drugs that inhibit H 2 signaling thus reduce the secretion of gastric acid. H 2-antihistamines are among first-line therapy to treat gastrointestinal conditions including peptic ulcers and gastroesophageal reflux disease. Some formulations are available over the counter.
Mast cell activation syndrome (MCAS) is a term referring to one of two types of mast cell activation disorder (MCAD); the other type is idiopathic MCAD. [1] MCAS is an immunological condition in which mast cells, a type of white blood cell, inappropriately and excessively release chemical mediators, such as histamine, resulting in a range of chronic symptoms, sometimes including anaphylaxis or ...
Cholinergic urticaria typically presents with a number of small papular hives all over the body, that involve cutaneous inflammation (wheals) and severe nerve pain, which usually develops in response to exercise, bathing, staying in a heated environment, spicy foods, or emotional stress.
Hives are a common skin reaction that causes itchy bumps or raised, swollen-looking patches to appear on the skin. Relieving hives at home with tips from the American Academy of Dermatology Skip ...
Symptoms include recurrent episodes of hives, which are red, itchy, and swollen areas on the skin. These episodes can be triggered by various factors, including heat, stress, or for no identifiable reason. [6] Autoimmune urticaria is a relatively rare condition, affecting a small percentage of the population. [1]