No abnormal sensations. | |
Abnormal sensations that do not cause noticeable discomfort, such as dizziness, unusual perspiration, and mild stomach awareness. | |
Mild discomfort, which is noticeable, but is not distracting and would not interfere, even with the performance of demanding tasks. | |
Moderate discomfort, which can be tolerated indefinitely, but is distracting and might affect one's ability to perform demanding tasks. | |
Severe discomfort, which cannot be tolerated indefinitely, or the feeling of impending vomiting. |