Allergy to tree, grass and weed pollen is usually seasonal but can be debilitating to many people. During those seasons that can last for several months, the pollen can trigger allergic symptoms affecting the nose, eyes, lungs and skin. Subsequently, they can have increased susceptibility to infections. While many patients get relief with antihistamines and nasal steroid spray, others do not benefit or are unable to tolerate the side effects of the medications. Allergy shot is an effective treatment, but can be an inconvenience due to the injection pain and frequent office visit.