What causes allergies?
Allergies result from a dysfunction of the immune system. When the body encounters harmless antigens in the environment (pollen, mold, pet dander, etc.), it should simply ignore them. But sometimes, the immune system mistakenly perceives the antigens as threats and overreacts in ways that lead to troubling symptoms.
The most common symptoms include:
- Watery eyes
- Runny or congested nose
- Chronic sinus infection
- Itchy eyes
- Frequent ear infections
But the list doesn’t stop there. Below are lesser-known symptoms that can indicate allergic disease.
- Skin problems including eczema and hives
- Respiratory effects including endless colds, chronic cough, and recurrent bronchitis
- Conjunctivitis (allergic eye irritation)
- Nasal polyps
- Muscle and joint pain
- Mental effects such as confusion, slow thinking, depression, and forgetfulness