Understanding Allergies
Allergies occur when the immune system overreacts to a seemingly harmless substance. The immune system mistakes the substance for a harmful invader, like a virus or bacteria, and triggers an allergic reaction to protect the body. The symptoms of allergies include sneezing, coughing, wheezing, runny nose, itchy eyes, and skin rashes.Common Causes of Allergies
Common allergens include:1. Pollen from trees, grasses, and weeds.
2. Dust mites.
3. Animal dander.
4. Mold spores.
5. Insect stings and bites.
6. Certain types of food, such as peanuts, shellfish, and dairy products.
7. Medications, such as antibiotics and aspirin.