| Abbreviation | Definition |
|---|---|
| DSI | Down Syndrome International |
| DSM | Down Syndrome Massive |
| DSP | Down Syndrome Phil |
| DSPG | Down Syndrome Parents Group |
| DSPS | Displaced Sleep Phase Syndrome |
| DSSM | Down Syndrome Super Moms |
| DTS | Digital Tourettes Syndrome |
| EDS | Ehlers Danlos syndromes |
| EDS | EhlersDanlos syndrome |
| EDS | Ehlers–Danlos syndrome |
| EGUS | Equine Gastric Ulcer Syndrome |
| ELPS | Excessive Lateral Pressure Syndrome |
| ENS | Empty Nest Syndrome |
| ENS | Empty Nose Syndrome |
| ENS | Extreme Nymphatic Syndrome |
| EPPS | Extreme Peter Pan Syndrome |
| ESCS | Enhanced S Cone Syndrome |
| EUS | Epizootic Ulcerative Syndrome |
| FAPS | Familial adenomatous polyposis syndrome |
| FAPS | Functional Abdominal Pain Syndrome |