| Abbreviation | Definition |
|---|---|
| PSA | Psoriasis Symptom Assessment |
| PSA | PSoriatic Arthritis |
| PSAP | Physician Shortage Area Program |
| PSBR | Protonated Schiff Base of Retinal |
| PSC | Primary Sclerosing Cholangitis |
| PSD | Post School Depression |
| PSD | Post Stroke Depression |
| PSDS | Post Stroke Depression Scale |
| PSE | Psuedomonas Specific Enzyme |
| PSEUDOEPH | Pseudoephedrine Hydrochloride |
| PSEUDOEPHSULF | Pseudoephedrine Sulfate |
| PSEUDOEPHTAN | Pseudoephedrine Tannate |
| PSF | Posterior Spinal Fusion |
| PSFP | Puget Sound Family Physicians |
| PSGL | Human P-selectin glycoprotein ligand |
| PSGR | Physicians and Scientists for Global Responsibility |
| PSH | Private Subconscious-mind Healing |
| PSH | Pseudoangiomatous Stromal Hyperplasia |
| PSI | Pain, Spasm, and Inflammation |
| PSI | Pleural Space Infection |