| Abbreviation | Definition |
|---|---|
| CREST | Calcinosis,Raynaud's phenomenon, Esophagial dysmotility, Sclerodactyly and Telangiectasia |
| CRMS | CFTR Related Metabolic Syndrome |
| CSAAS | Child Sexual Abuse Accommodation Syndrome |
| CSAAS | Child Sexual Abuse Accomodation Syndrome |
| CSHS | Cutaneous skeletal hypophosphatemia syndrome |
| CSVSS | Coronary Subclavian Vertebral Steal Syndrome |
| CSWS | Cerebral salt wasting syndrome |
| CSWS | Cerebral Salt-Wasting Syndrome |
| CTAS | Compulsive Tool Acquisition Syndrome |
| CTS | Carpal Tunnel Syndromes |
| CWS | Celebrity Worship Syndrome |
| DADS | Appreciating Down Syndrome |
| DADS | Dads Appreciating Down Syndrome |
| DADSC | Denver Adult Down Syndrome Clinic |
| DAIDS | Division of Acquired Immune Deficiency Syndrome |
| DANISH | Dysdiadochokinesia and dysmetria ,Ataxia, NystagmuIntention tremor,Speech (slurred and staccto),Hypotonia |
| DEBS | Dry Eye Blepharitis Syndrome |
| DEDS | Dermatosparaxis Ehlers Danlos syndrome |
| DILS | Diffuse Infiltrative Lymphocytosis Syndrome |
| DIOS | Distal Intestinal Obstruction Syndrome |