Anaphylactic shock develops within seconds or minutes of contact with a “trigger” and is an emergency. Common causes of allergic reactions are: pollen stings and bites latex food items, such as nuts, ...
The most common causes of anaphylaxis are foods like peanuts, tree nuts, fish and shellfish, but it can also be triggered by wasp and bee stings, natural latex and drugs like penicillin ...
In experimental anaphylaxis with ovalbumin sensitized guinea ... of vascular permeability are unlikely to be the primary causes of the documented depression of cardiac output and blood pressure".