Common allergens causing sinus allergies include pollen from trees, grass and weeds, animal dander, feathers, dust, dust mites, molds, mildew, smoke, perfumes, cockroaches, industrial chemicals, insect stings and certain foods, such as milk, eggs, peanuts, shellfish, and chocolate, among others.
The best solution to avoid triggering sinus allergies is to avoid coming in contact with the specific allergen that affects the individual. As can be seen from the above list, however, that is often impossible. In addition to the injections discussed previously, one can also use nasal irrigation to clean out the nasal passages, and this will provide some help, even if it might be limited.
Since 70-80% of people who suffer from sinusitis have allergies, it is important that sinus sufferers get treatment for their sinus allergies. If not, the constant inflammations and soreness can lead to permanent problems, in particular cilia damage, which will only make one's sinusitis worse in the long run. Sinus allergies can often be treated successfully and improve conditions, even if they don't eliminate one's sinus problems entirely, as in my case.