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Anaphylactoid Reactions (Allergic Like)

Description

Anaphylactoid reactions are not true allergic reactions. They are caused by the release of histamine and can result in a spectrum of symptoms from a rash to life threatening anaphylaxis. Intravenous contrast dye and nonsteroidal anti-inflammatory drugs such as ibuprofen are two common causes.

Symptoms

Symptoms

Rash, itching, throat swelling, facial swelling, breathing problems, wheezing, low blood pressure, fainting, death.

Tests

Tests

A history and physical exam will be performed to determine the offending agent.

Standard Workup
  • X-Ray
Treatment

Treatment

Treatment includes: antihistamines (diphenhydramine/Benadryl), histamine 2 blockers (cimetidine/Tagamet, ranitidine/Zantac), steroids, epinephrine, and intravenous fluids.

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Adverse Events with Ultrasound Micro-bubble Contrast Agents
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Contrast-media-induced hypersensitivity or allergic/allergic- like ...

allergy-like reaction, allergic-like reaction, nonallergic reaction, pseudoallergic reaction, or anaphylactoid reaction are currently in use [1–5]. ...

http://www.springerlink.com/index/4vg3g131604141m3.pdf
Anaphylaxis - Wikipedia, the free encyclopedia

After an initial exposure "sensitizing dose" to a substance like bee sting ... Some vaccinations are also known to cause "anaphylactoid" reactions. ..... in both true IgE-based allergic reactio

HON Allergy Glossary Anaphylactoid Reactions

Jun 28, 2002 ... HON Allergy Glossary, Anaphylactoid Reactions: Anaphylactoid reactions have the same clinical manifestations as anaphylaxis, ...

Acute Allergic-Like Reactions to Gadolinium-Containing IV Contrast ...

Apr 8, 2008 ... Tishler S, Hoffman JC Jr. Anaphylactoid reactions to i.v. gadopentetate ... Manifestations of Mild Acute Allergic-Like Reaction to ...

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