Anaphylaxis history and symptoms: Difference between revisions
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==Symptoms== | ==Symptoms== | ||
Symptoms of anaphylaxis are related to the action of ([[IgE]]) and other [[anaphylatoxin]]s, which act to release [[histamine]] and other mediator substances from [[mast cell]]s (degranulation). In addition to other effects, histamine induces [[vasodilation]] of [[arterioles]] and constriction of [[bronchioles]] in the lungs, also known as [[bronchospasm]] (constriction of the airways). | Symptoms of anaphylaxis are related to the action of ([[IgE]]) and other [[anaphylatoxin]]s, which act to release [[histamine]] and other mediator substances from [[mast cell]]s (degranulation). In addition to other effects, histamine induces [[vasodilation]] of [[arterioles]] and constriction of [[bronchioles]] in the lungs, also known as [[bronchospasm]] (constriction of the airways). | ||
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Symptoms
Symptoms of anaphylaxis are related to the action of (IgE) and other anaphylatoxins, which act to release histamine and other mediator substances from mast cells (degranulation). In addition to other effects, histamine induces vasodilation of arterioles and constriction of bronchioles in the lungs, also known as bronchospasm (constriction of the airways).
Symptoms can include the following:
- Polyuria
- Respiratory distress
- Hypotension (low blood pressure)
- Encephalitis
- Fainting
- Unconsciousness
- Urticaria (hives)
- Flushed appearance
- Angioedema (swelling of the lips, face, neck and throat)
- Tears (due to angioedema and stress)
- Vomiting
- Itching
- Diarrhea
- Abdominal pain
- Anxiety
- Slurred speech
- Nasal congestion
- Palpitations
- Cough
The time between ingestion of the allergen and anaphylaxis symptoms can vary for some patients depending on the amount of allergen consumed and their reaction time. Symptoms can appear immediately, or can be delayed by half an hour to several hours after ingestion. [1] However, symptoms of anaphylaxis usually appear very quickly once they do begin.
References
- ↑ ""Food Allergies"". Asthma and Allergy Foundation of America. Text "(March 28, 2007) " ignored (help)