The immune system releases antibodies . The tissues release histamine and other substances. Prolonged anaphylaxis can cause heart arrhythmias . Anaphylaxis can occur in response to any allergen . Pollens and other inhaled allergens rarely cause anaphylaxis.
Some people have an anaphylactic reaction with no identifiable cause.
Anaphylaxis occurs infrequently. However, it is life-threatening and can occur at any time. Risks include prior history of any type of allergic reaction. The information provided herein should not be used for diagnosis or treatment of any medical condition. It is provided for your general information and is not a substitute for medical care or supervised medical treatment.