Drooling Rating Scale—Thomas-Stonell and Greenberg
| Drooling severity |
| Dry—never drools |
| Mild—wet lips only |
| Moderate—wet lips and chin |
| Severe—damp clothing |
| Profuse—damp clothing, hands and surrounding objects |
| Drooling frequency |
| Never—no drooling |
| Occasionally |
| Frequently |
| Constantly |