| Abbreviation | Definition |
|---|---|
| ADSM | Animal Disease Spread Model |
| AE | Acute Exposure |
| AEBD | Autoimmune Epidermal Blistering Diseases |
| AECB | Acute Exacerbation of Chronic Bronchitis |
| AECD | Aspirin exacerbated cutaneous disease |
| AEH | Aeromonas hydrophila |
| AEH1 | Aeromonas hydrophila 1 |
| AERD | Aspirin Exacerbated Respiratory Disease |
| AES | Aeromonas |
| AES12 | Aeromonas 12 |
| AFLD | Alcoholic Fatty Liver Disease |
| AFUD | American Federation for Urologic Disease |
| AFUD | American Foundation for Urological Disease |
| AFUD | American Foundation of Urologic Disease |
| AGSD | Association for Glycogen Storage Disease |
| AHCD | Anterior Horn Cell Disease |
| AHD | Adenovirus Hemorrhagic Disease |
| AHD | Alien hand syndrome |
| AHD | Alveolar Hydatid Disease |
| AHD | Atherosclerotic Heart Disease |