Anemia, Diamond–Blackfan Anemia, hypoplastic, congenital Anemia, pernicious Anemia, sideroblastic Anemia sideroblastic spinocerebellar ataxia Anencephaly Anencephaly spina bifida X linked Aneurysm Aneurysm, intracranial berry Aneurysm of sinus of Valsalva [en.wikipedia.org]

[…] maltase deficiency Acidemia, isovaleric Acidemia, propionic Acitretine antenatal infection Ackerman syndrome Acn–Acq [ edit ] Acne rosacea Acne vulgaris ; often called acne Acoustic neuroma Acoustic schwannomas Acquired agranulocytosis Acquired central hypoventilation [en.wikipedia.org]

[…] dolorosa, aka Dercum's disease Ado–Adr [ edit ] Adolescent benign focal crisis Adrenal adenoma, familial Adrenal cancer Adrenal disorder Adrenal gland hyperfunction Adrenal gland hypofunction Adrenal hyperplasia Adrenal hyperplasia, congenital Adrenal hypertension [en.wikipedia.org]

retardation Aniridia cerebellar ataxia mental deficiency Aniridia mental retardation syndrome Aniridia ptosis mental retardation obesity familial Aniridia renal agenesis psychomotor retardation Aniridia, sporadic Aniridia type 2 Anisakiasis Ankle defects [en.wikipedia.org]