| A.I. | aromatase inhibitor |
|---|---|
| A.I.I.M.S. | All India Institute of Medical Sciences |
| A.I.L. | Angio-immunoblastic lymphadenopathy |
| A.I.L.D. | Angio-immunoblastic lymphadenopathy with dysproteinaemia |
| A.I.M.S. | Arthritis Impact Measurement Scale |
| A.M.S. | Acute Mountain Sickness |
| A.N. | Anorexia Nervosa |
| A.P. | Acute Pancreatitis |
| A.P.A. | American Psychiatric Association |
| A.P.E. | acute pulmonary embolism |