You'd better talked with medics. It's mainly body related, but not a psyche as should not be linked hard with emotions or thoughts.

Sometimes an allergy is linked with chronic inflammations and infections (in any body part, including GIT). If to remove or reduce them - the allergy may be _reduced_ too. May help to reduce contacts with toxins or different substances which may provoke an allergy.
In case of nose area - mb may help local antibiotic meds, a variant of which are onion and garlic eaten everyday. Cuten onion may be respirered too.