| Abbreviation | Definition |
|---|---|
| ARED | Age Related Eye Disease |
| AREDS | Age Related Eye Disease Study |
| ARND | Alcohol-related neurodevelopmental disorder |
| ASAC | Asthma Sinus Allergy Centers |
| ASBD | American Society for Breast Disease |
| ASBD | American Society of Breast Disease |
| ASBD | Australasian Society for Breast Disease |
| ASDAS | Ankylosing Spondylitis Disease Activity Score |
| ASDD | Abdominal segment deformity disease |
| ASES | Asthma Self Efficacy Scale |
| ASH | alcoholic steatohepatitis |
| ASLC | Acute Self Limited Colitis |
| ASRD | Aspirin Sensitive Respiratory Disease |
| ASSS | Avon Skin So Soft |
| ASTDA | American Sexual Transmitted Diseases Association |
| ATD | aerosol transmissible disease |
| ATDM | Automated Telephone Disease Management |
| ATSDR | Agency for Toxic Substances and Diseases Registry |
| ATTD | Advanced Technologies and Treatments for Diabetes |
| ATTD | Advanced Technologies and Treatments in Diabetes |