The progression to anaphylaxis usually involves an IgE-mediated or non IgE-mediated response. It is a medical emergency that involves multiple systems.  The condition involves pulmonary, gastrointestinal, cardiovascular and integumentary systems and can lead to cardiorespiratory arrest.
Anaphylaxis pathophysiology
Allergy pathophysiology
Stevens-Johnson syndrome pathophysiology
Anaphylaxis laboratory findings
Sepsis pathophysiology
Erysipelas pathophysiology
Drug allergy pathophysiology
Epistaxis pathophysiology