Allergies are usually very treatable but at the same time very frustrating. Runny nose, itchy eyes, scratchy throat and plugged ears and headaches all mark the things allergy sufferers go through. Pollen, smog, grass, trees, perfumes, cleaning solutions, mold/spores, and dust, are the airborne irritants that lead to those symptoms. If those symptoms linger, then eventually infections can occur, specifically bacterial infections. Then the cycle of antibiotics, decongestants and antihistamines start.