| PAN | periarteritis nodosa; periodic alternating nystagmus; peroxyacylnitrate; polyarteritis nodosa; posit... |
|---|---|
| MPPN | malignant persistent positional nystagmus |
| PN | papillary necrosis; parenteral nutrition; penicillin; perceived noise; percussion note; periarteriti... |
| Dir, dir | director; direction, directions |
| BPPV | Benign Paroxysmal Positional Vertigo |