what are the symptoms of a systemic anaphylactic reaction
Anaphylaxis Anaphylaxis is a serious allergic reaction that is rapid in onset and may cause death.[4][5] It typically causes more than one of the following: an itchy rash, throat or tongue swelling, shortness of breath, vomiting, lightheadedness, and low blood pressure.[1] These symptoms typically come on over minutes to hours.[1]