| Abbreviations | Meaning |
 | TCS | Treacher Collins Syndrome |
| NNS | Neural Network Sramek [equation]; Nicotine Nasal Spray; Nonneoplastic Syndrome |
| PPS | Pelvic Pain Syndrome |
| SDSEM | Spinocerebellar Degeneration-slow Eye Movements [syndrome] |
| PIP | Psychosis, Intermittent Hyponatremia, Polydipsia [syndrome] |
| MRXS | Mental Retardation, X-linked, Syndrome |
| MACS | Multicenter Acquired Immunodeficiency Syndrome (AIDS) Cohort Study |
| CREST | Calcinosis, Raynaud Phenomenon, Esophageal Involvement, Sclerodactyly, And Telangiectasia [syndrome]; Carotid Revascularization And Endarterectomy Vs Stent Trial |
| BTS | Batten Syndrome; Blood Transfusion Service; Blue Toe Syndrome; Bradycardia-tachycardia Syndrome; British Thoracic Society |
| SIADH | Syndrome Of Inappropriate Secretion Of Antidiuretic Hormone |
| CFS | Chronic Fatigue (and Immune Dysfunction) Syndrome |
| LEOPARD | Lentigines, EKG Abnormalities, Ocular Hypertelorism, Pulmonary Stenosis, Abnormalities Of Genitalia, Retardation Of Growth, And Deafness [syndrome] |
| ALDS | Albinism-deafness Syndrome |
| US3 | Usher Syndrome Type III |
| BBS | Brown Bowel Syndrome |
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