rapid release of inflammatory
mediators from basophils and mast cells results in vasodilation, bronchoconstriction, and
increased capillary permeability. The skin and the cardiovascular, respiratory, neurological,
and gastrointestinal systems can all be affected. Symptoms of anaphylactic shock include
hypotension, tachycardia, difficulty breathing and swallowing due to airway inflammation
or spasm, hives, skin flushing, dizziness, diarrhea, and weakness. Patients may also report
experiencing a sense of impending death. Complications include respiratory distress, loss of
consciousness, and cardiac arrest.