In Austria there are 20 listed practitioners of NAET - Dr. Namburdripad's Allergy Elimination Techniques.
They are in Wien, Inst, Linz, Salzburg, Kornenburg, Velden,
Tulin, Mariasdorf, Perchtoldsdorf, Aggsbach, Oberfucha and Klagenfurt.
I'm using a similar method in Canada, called "Allergy Antidotes" with good success (drugless).
It should not take too long to clear this. My guess is 2-3 visits.
Just do a search for the one closest to your area.get in touch with him/her to get more information.
Wishing you well! Gesundheit!
Hello and hope you are doing well.
If it is an acute episode of sinusitis, it should resolve with antibiotics and anti inflammatory medications. However, on exposure to the allergen again you may develop symptoms. You could try to avoid the allergen. Alternatively an allergy specialist can help to confirm the diagnosis. He can even help to desensitize you.
Hope this helped and do keep us posted.