Characteristics of anaphylaxis from tertiary-care hospital in lower northern Thailand: A ten-year retrospective cross-sectional study.

Background: The prevalence and etiology of anaphylaxis vary based on geographic regions, study design, and definition used. Anaphylaxis leading to emergency department visits and hospitalizations has increased worldwide.

Objective: The prevalence and etiology of anaphylaxis vary based on geographic regions, study design, and definition used.