By Mark McKinley
Allergies are a overreaction of the body's immune system caused by specific substances that are very harmful. The overreacted immune system is then making yourself or other people have allergic reactions. When having a allergic reaction many things could feel like there happening you could feel like your tingling or itching in your in the mouth. You may also see hives, you may feel itchy, and you may notice eczema, and swelling to the lips,face, tongue and throat or other parts of the body. You may also notice wheezing, nasal congestion or trouble breathing and abdominal pain, diarrhea, nausea or vomiting. Also some symptoms are dizziness, lightheaded, or fainting.
Causes for allergies
Allergies all start with the exposure to an allergen. Even if you inhale a allergen that you are not allergic to overtime your body senses that allergen as a threat which causes your immune system to break out then making it a allergic reaction then causing allergies.