Introduction To Allergies
We have observe that from an inappropriate reaction of the immune system to certain proteins allergies stem. These proteins are known as allergens, and they are generally common and harmless substances such as pollen, mold spores, animal dander, dust, various foods, insect venoms, or medicines. To identify intruders within the body and get rid of them the immune system is designed. However for an allergic person, , the immune system has a hard time identifying which are the dangerous intruders, and which are okay. An allergic person has a hypersensitive immune system, which singles out a harmless substance (like the allergens mentioned above), then attacks it.
Genrally the type of symptoms an allergy sufferer shows depend on the type of allergen. Respiratory allergens cause symptoms like sneezing, sniffling, wheezing, coughing, runny nose, itchy eyes, sore throats, etc. eczema, hives, or other reactions can caused by skin irritants. Responses to food allergens vary greatly, and in severe cases can cause a possibly fatal condition, called anaphylaxis.
