| Variable | Number (%) |
| Sex |
|
| Male | 15 (51.7) |
| Female | 14 (48.3) |
| Nationality |
|
| Saudi | 14 (48.3) |
| Non-Saudi | 15 (51.7) |
| Etiological factors |
|
| URTI |
|
| Yes | 12 (41.4) |
| No | 17 (58.6) |
| Fever |
|
| Yes | 15 (51.7) |
| No | 14 (48.3) |
| Drugs |
|
| Yes | 1 (3.4) |
| No | 28 (96.6) |
| Others | 5 (17.2) |