Angioreticuloma cerebelli, syn — Aponeurositis plantaris syn
- angioreticuloma cerebelli, syn. syndr. Lindau
- angioreticulo-sarcomatosis syn. syndr. Kaposi
- angiosarcoma pigmentosum syn. syndr. Kaposi
- angiosclerosis obliterans syn. syndr. Charcot (I)
- anhydrosis hereditaria syn. syndr. Helweg — Larsen
- anhydrosis hypotrichotica syn. syndr. Christ — Siemens — Touraine
- anhydrosis universalis syn. syndr. Ross
- anomalia Arnold — Chiari syn. syndr. Arnold — Chiari
- anomalia Cruveilhier syn. sympt. Cruveilhier (II)
- anomalia Ebstein syn. syndr. Ebstein
- anomalia Hegglin syn. syndr. Hegglin (I)
- anomalia Steinbrinck — Beguez — Cesar syn. syndr. Chediak — Higashi
- anosognosia syn. sympt. Anton
- anterior spinal artery syndrome (англ.) syn. syndromus Beck
- antesystolia syn. syndr. Wolff — Parkinson — White
- antidiabetes insipidus syn. syndr: Parhon
- anxietas tibiarum syn. syndr. Wittmaack — Ekbom
- aphasia Lichtheim syn. sympt. Dejerine — Lichtheim
- aphasia sensoria syn. syndr. Bianchi
- aphthae cachecticae syn. syndr. Fede — Riga
- aphthae Cardarelli syn. syndr. Fede — Riga
- aphthae Riga syn. syndr. Fede — Riga
- aphthosis generalisata syn. syndr. Baader; syndr. Stevens — Johnson
- aphthosis Neumann syn. syndr. Stevens — Johnson
- aphthosis Touraine syn. syndr. Behcet
- apiphysitis calcanei syn. syndr. Blencke
- aplasia axialis extracorticalis congenita syn. syndr. Pelizaeus — Merzbacher
- aplasia cutanea cfrcumscripta syn. syndr. Freud
- aplasia cutanea systematisata syn. syndr. Brauer
- aplasia periostalis syn. syndr. Vrolik
- aplasia retinae hereditaria syn. syndr. Leber (II)
- aplasia thymica hereditaria syn. syndr. Glanzmann — Riniker
- aponeurositis plantaris syn. syndr. Ledderhose (III)