In many cases allergy symptoms are mild to moderate and can include watery eyes, a runny nose, itchy palate, or skin rash. Sometimes, an allergy can be so severe that it can be life threatening. These allergies are called anaphylactic allergies. In anaphylaxis - the reaction is so severe that it can place the person into shock, resulting in symptoms such as difficulty breathing, hives, tightness of the throat, nausea/vomiting, rapid heartbeat, cardiac arrest and more. If you or a loved one is experiencing this type of reaction due to allergy make sure to call 9-1-1