From Dog
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Anaphylaxis is defined as an acute allergic response, resulting in release of histaminergic compounds.

This leads to rapid hypovolemia, hypotension and circulatory shock.

Anaphylaxis can involve several organ systems, particularly the skin, respiratory tract, gastrointestinal tract and the cardiovascular system. The severity of anaphylactic reaction is variable and can be classified into severity grades I - IV. Some anaphylactoid reactions can be fatal in dogs.

Causes include:


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