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allergen
A substance that causes an allergic reaction.
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allergic reaction
The body''s exaggerated immune response to an internal or surface agent
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anaphylaxis
An extreme, possibly life-threatening systemic allergic reaction that may include shock and respiratory failure.
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envenomation
The act of injecting venom.
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epinephrine
A medication that increases heart rate and blood pressure but also eases breathing problems by decreasing muscle tone of the bronchiole tree; you may be allowed to help the patient self-administer the medication.
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histamines
Substance released by the immune system in allergic reactions that are responsible for many of the symptoms of anaphylaxis.
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leukotrienes
Chemical substances that contribute to anaphylaxis; released by the immune system in allergic reactions
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stridor
A harsh, high-pitched, crowing inspiratory sound, such as the sound often heard in acute laryngeal (upper airway) obstruction
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toxin
A poison or harmful substance.
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urticaria
Small spots of generalized itching and/or burning that appear as multiple raised areas on the skin; hives.
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wheal
A raised, swollen, well-defined area on the skin resulting from an insect bite or allergic reaction.
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wheezing
A high-pitched, whistling breath sound, characteristically heard on expiration in patients with asthma or COPD.
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