An allergy is the body’s hypersensitive reaction to a particular substance — such as different types of pollen, pet dander, food, mold and dust — causing uncomfortable symptoms, like itchy, watery eyes, coughing and sneezing, irritated skin, wheezing and more. Asthma, on the other hand, is an inflammatory lung disease that results in difficulty breathing. Substances that trigger allergies can also trigger asthma attacks. So how can you tell if you suffer from allergies or asthma?