Anaphylaxis Causes
By Dr Ananya Mandal, MD
There are several known triggers or causes of anaphylactic reactions. Some of the common and identifiable causes include:-
Medications or drugs
Penicillin is the most common cause of drug-induced anaphylaxis. The incidence of allergy to penicillin is around 1 in 500 of the population. Many of these individuals may escape with just a skin rash or urticaria as a response to penicillin. Only some would manifest symptoms of an anaphylactic shock.
Around 4% of those allergic to penicillins are also allergic to cephalosporins (another group of antibiotics) especially to first generation cephalosporins. The next common group of medications that cause drug induced anaphylaxis includes nonsteroidal anti-inflammatory drugs (NSAIDs) like Aspirin.
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