| AAAAI | American Academy of Allergy, Asthma & Immunology |
| CPR | Cardiopulmonary Resuscitation |
| CVS | Cardiovascular System |
| EAACI | European Academy of Allergy and Clinical Immunology |
| GIS | Gastrointestinal System |
| IM | Intramuscular |
| IQR | Interquartile Range |
| MRGPRX2 | Mas-Related G Protein–Coupled Receptor X2 |
| NSAID | Nonsteroidal Anti-Inflammatory Drug |
| SD | Standard Deviation |
| SI | International System of Units |
| SPSS | Statistical Package for the Social Sciences |
| WAO | World Allergy Organization |