Allergic Conjunctivitis Allergic conjunctivitis is the inflammation of the eyelid caused by an allergic… Read More Allergic Rhinitis Allergic rhinitis, also known as hay fever, is an allergic reaction to specific allergens, such as… Read More Anaphylaxis Anaphylaxis is a severe, potentially life-threatening allergic reaction. The reaction can occur within… Read More Atopic Dermatitis Atopic dermatitis is the most common type of eczema. In fact, more than 18 million American… Read More Bee and Insect Sting Allergies Many people who get stung by an insect have a minor reaction that may include… Read More Chronic Cough Coughing serves an essential purpose, despite how uncomfortable it may be. When a person coughs… Read More Chronic Nasal Congestion Nasal congestion is often a symptom of minor illnesses, such as a sinus infection… Read More Contact Dermatitis Contact dermatitis is a form of eczema caused by an allergen or irritant… Read More Cosmetic Allergy Beauty products, such as shampoo, makeup, and even cologne, can irritate the skin or cause an… Read More Dust Mite Allergy Dust mites are microscopic, insect-like pests that can live in the bedding, mattresses, upholstered… Read More Food Additive Reactions Food additives are substances that are added to foods and drinks to enhance flavors… Read More Food Allergy A food allergy is an immune system reaction that occurs after eating a specific food… Read More Food Intolerances Food intolerance, also known as food sensitivity, refers to difficulty with digesting certain foods… Read More Hives, Urticaria and Angioedema Hives, also known as urticaria, are itchy, raised, reddish areas on the skin that are usually triggered… Read More Laryngopharyngeal Reflux Laryngopharyngeal reflux (LPR) is a condition in which stomach acid travels up… Read More Mast Cell Activation Syndrome Mast cells are a normal part of the immune system. They live in the bone… Read More Medication and Drug Sensitivities (Local Anesthetics) Everyone reacts to medications and drugs differently… Read More Nasal Polyps Nasal polyps are soft, often painless, benign (noncancerous) growths on the lining of the nasal… Read More Oral Allergy Syndrome Oral allergy syndrome (OAS) is a common food-related allergy that is caused by cross-reacting allergens… Read More Penicillin Allergy Penicillin allergy is an abnormal reaction of the immune system to the antibiotic drug, penicillin… Read More Pet Allergy Pet allergies are extremely common. In the United States, more than 60% of… Read More Pollen Allergy Pollen allergies affect tens of millions of Americans every year. Pollen is a fine yellowish… Read More Sinusitis The sinuses are hollow cavities that surround the cheekbones, eyes and… Read More Vocal Cord Dysfunction Vocal cord dysfunction (VCD) occurs when the vocal cords do not open… Read More