Allergies are an immune response which occurs when an element in the environment, known as an allergen, gets into contact with an individual either through breathing it in, ingesting it, or skin contact. When an allergen come into contact with the person, he or she has an irregular or excited immune response. Allergies can cause symptoms like:
- Hives
- Rashes
- Sneezing
- Feeling tired or ill
- Itchy, watery eyes
- Itchy, runny nose
- Coughing