Some really great news out of the University of Manchester. Researchers there, in conjunction with folks from St George's, University of London are developing drugs that will stop allergens from entering the body, thereby eliminating allergic responses. Put simply, they feel their work will eliminate allergies within 5 years. These drugs called Allergen Delivery Inhibitors (ADIs) are designed to disable these allergens so they can no longer eat through the protective cell layer and block the allergic reaction before it occurs.
As someone who has issues with hay fever, grasses, pet dander, and a host of other lesser antagonists, I couldn't be happier. Of course, we'll have to see how this pans out, watch for clinical trials, assess side effects, pass through bureaucratic tangles, etc., so it may be more than 5 years for the relief to begin.