| | Conditions Treatments | Allergies What is the science name of allergies? Allergy is the common name for the condition known in medicine as atopy. Allergies are caused by an immune system response to an allergen. Allergies - Related Articles Diabetes Injuries How is disease transmitted? How to Recognize the World's Deadliest Spiders How to Use the Young Living Cleansing Trio Vitamin C for Prostate Cancer Can Cymbalta & Lorazepam Be Taken Together? How much for a eyebrow piercing at black rose?