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| Symptom category | Occurrence (%) |
|---|---|
| Respiratory problems | |
| Sneezing attacks | 8 |
| Nasal congestion | 8 |
| Runny nose | 13 |
| Sore or dry throat; frequent coughing | 13 |
| Tight chest; breathing difficulties (breath shortness) | 3 |
| Emphysema | 4 |
| General Health problems | |
| Chapped Lips | 5 |
| Unusual thirst | 11 |
| Allergy | 20 |
| Migraines | 3 |
| Headache | 28 |
| Multiple colds | 4 |
| Dry, itching, irritated, or watery eyes | 10 |
