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. Anaphylaxis Please read this Important notice . Please read it.