Which assessment data indicated to the nurse that a client is having an anaphylactic reaction to a medication?

Anaphylaxis is a severe and potentially life-threatening allergic reaction that occurs rapidly after exposure to an allergen. The symptoms of anaphylaxis can vary but usually involve multiple organ systems, including the skin, respiratory, cardiovascular, and gastrointestinal systems. Wheezing and dyspnea are two common symptoms of anaphylaxis that indicate the respiratory system's involvement. Urticaria and pruritis are skin manifestations that can also be present in anaphylaxis, but they are not specific to this condition. Insomnia and irritability are not typical symptoms of anaphylaxis. Tinnitus and diplopia are also not common symptoms of anaphylaxis.