| Alkalemia | http://bio2rdf.org/meddra:C0221106 | | |
| Alkalosis | http://bio2rdf.org/meddra:C0002063 | | |
| Allergic asthma | http://bio2rdf.org/meddra:C0155877 | | |
| Allergic bronchitis | http://bio2rdf.org/meddra:C1260881 | | |
| Allergic conditions | http://bio2rdf.org/meddra:C0851444 | | |
| Allergic Conjunctivitis | http://bio2rdf.org/meddra:C0009766 | | |
| Allergic rhinitis (disorder) | http://bio2rdf.org/meddra:C2607914 | | |
| Allergy to peanuts | http://bio2rdf.org/meddra:C0559470 | | |
| Alopecia | http://bio2rdf.org/meddra:C0002170 | | |
| Alopecia Areata | http://bio2rdf.org/meddra:C0002171 | | |
| Aluminium overload | http://bio2rdf.org/meddra:C3495831 | | |
| Alzheimer's Disease | http://bio2rdf.org/meddra:C0002395 | | |
| Amblyopia tobacco | http://bio2rdf.org/meddra:C0002419 | | |
| Amebiasis | http://bio2rdf.org/meddra:C0002438 | | |
| Amebic colitis | http://bio2rdf.org/meddra:C0013370 | | |
| Amenorrhea | http://bio2rdf.org/meddra:C0002453 | | |
| Amenorrhea secondary | http://bio2rdf.org/meddra:C0232940 | | |
| Amnesia | http://bio2rdf.org/meddra:C0002622 | | |
| Amyloidosis | http://bio2rdf.org/meddra:C0002726 | | |
| Amyotrophic Lateral Sclerosis | http://bio2rdf.org/meddra:C0002736 | | |
| Anal carcinoma | http://bio2rdf.org/meddra:C0279637 | | |
| Anal Fissure | http://bio2rdf.org/meddra:C0016167 | | |
| Analgesic effect | http://bio2rdf.org/meddra:C0948482 | | |
| Anaphylactoid reaction | http://bio2rdf.org/meddra:C0340865 | | |
| anaphylaxis | http://bio2rdf.org/meddra:C0002792 | | |
| Anaplastic astrocytoma | http://bio2rdf.org/meddra:C0334579 | | |
| Anatomical narrow angle glaucoma | http://bio2rdf.org/meddra:C0154947 | | |
| Androgenetic Alopecia | http://bio2rdf.org/meddra:C0162311 | | |
| Anemia | http://bio2rdf.org/meddra:C0002871 | | |
| Anemia, Diamond-Blackfan | http://bio2rdf.org/meddra:C1260899 | | |