| Acute left ventricular failure | http://bio2rdf.org/meddra:C1306063 | | |
| Acute Kidney Insufficiency | http://bio2rdf.org/meddra:C1565662 | | |
| Acute intermittent porphyria | http://bio2rdf.org/meddra:C0162565 | | |
| Acute hypotension | http://bio2rdf.org/meddra:C0745176 | | |
| Acute hepatitis B | http://bio2rdf.org/meddra:C0276609 | | |
| Acute hemorrhage | http://bio2rdf.org/meddra:C0333276 | | |
| Acute graft rejection | http://bio2rdf.org/meddra:C1736177 | | |
| Acute gastroenteritis | http://bio2rdf.org/meddra:C0267446 | | |
| Acute Erythroblastic Leukemia | http://bio2rdf.org/meddra:C0023440 | | |
| Acute enterocolitis | http://bio2rdf.org/meddra:C3203466 | | |
| Acute duodenal ulcer | http://bio2rdf.org/meddra:C0341233 | | |
| Acute cystitis | http://bio2rdf.org/meddra:C0149523 | | |
| Acute Coryza | http://bio2rdf.org/meddra:C0086066 | | |
| Acute Coronary Syndrome | http://bio2rdf.org/meddra:C0948089 | | |
| Acute conjunctivitis | http://bio2rdf.org/meddra:C0155141 | | |
| Acute Chest Syndrome | http://bio2rdf.org/meddra:C0742343 | | |
| Acute bronchitis | http://bio2rdf.org/meddra:C0149514 | | |
| Acute angle-closure glaucoma | http://bio2rdf.org/meddra:C0154946 | | |
| Acute allograft rejection | http://bio2rdf.org/meddra:C1735634 | | |
| Actual Positive Heart Rate | http://bio2rdf.org/meddra:C2712143 | | |
| Actual Positive Blood Pressure | http://bio2rdf.org/meddra:C2712122 | | |
| Active tuberculosis | http://bio2rdf.org/meddra:C0151332 | | |
| Actinomycosis | http://bio2rdf.org/meddra:C0001261 | | |
| Actinic keratosis | http://bio2rdf.org/meddra:C0022602 | | |
| ACTH Syndrome, Ectopic | http://bio2rdf.org/meddra:C0001231 | | |
| Acromegaly | http://bio2rdf.org/meddra:C0001206 | | |
| Acrocyanosis | http://bio2rdf.org/meddra:C0221347 | | |
| Acne Vulgaris | http://bio2rdf.org/meddra:C0001144 | | |
| Acne pustular | http://bio2rdf.org/meddra:C0263443 | | |
| Acne cystic | http://bio2rdf.org/meddra:C0010666 | | |