Anaphylaxis is considered a life-threatening generalized or systemic allergic (or hypersensitivity) reaction with sudden onset (minutes to a few hours) (Simons et al ICON 2014). Many different definitions exist but most include similar details.
It is suggested that increased awareness of anaphylaxis is needed among healthcare professionals, patients, caregivers and the public to ensure optimal treatments are achieved (Simons et al ICON 2014). In addition, it is proposed that as a clinical emergency, all healthcare professionals need to be able to recognize and manage it (Muraro et al 2021).
The prevalence of the various causes of anaphylaxis are age-dependent and vary geographically (Muraro et al 2021). Although the fatality rate due to anaphylaxis remains low (Bilo et al 2020) the frequency of hospitalizations due to food and drug-induced anaphylaxis has increased in recent years (Turner et al 2015).