| BMI | body mass index |
| CI | confidence interval |
| DAO | diamine oxidase |
| HIT | histamine intolerance |
| HNMT | histamine N-methyltransferase |
| IBS | irritable bowel syndrome |
| ICD-10 | International Classification of Diseases, 10th Revision |
| MCA | mast cell activation |
| MCAD | mast cell activation disorder |
| MCAS | mast cell activation syndrome |
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