- apoplexie
- aposkeparnismus
- apotyphlitis
- appendalgia
- appendectomia
- appendicitis
- apraxie
- aptyalismus
- arachnitis (arachnoiditis)
- arachnoiditis
- arbovirus
- ardor
- areflexie
- areolitis
- argyrismus
- arose
- arrhenoblastoma
- artefakie
- artefiletika
- arteriectomia
- arteriitis
- arteriocapillaritis
- arteriolit
- arteriolitida
- arteriolitis
