A little off topic but... I had fairly severe allergies for years, had to get shots weekly. I was cured using NAET - Nambudripad's Allergy Elimination Techniques ( http://www.naet.com/ ). It uses acupressure, is totally painless and sounds a little like voodoo but I am living proof that it works. No immunotherapy (desensitizing) injections in over eight years and my allergist (who did not practice NAET) gave me a clean bill of health and told me I was healthier than I ever had been.
I am not a doctor and am not associated with NAET other than having had it. YMMV (I know of one person for whom it didn't seem to work). I am just throwing it out for informational purpose in case you want to investigate it yourself.
I hope you can find a solution to keep your down!