Allergies are a reaction of the body's immune system to something that is typically harmless, such as dust, pollen, or certain foods. When a person with allergies comes into contact with the allergen, the body releases chemicals, such as histamine. Symptoms such as sneezing, itching, and swelling can result.
How bad are my allergy symptoms?The causes of allergies and common allergens
Allergies are caused by a variety of things, including genetics, the environment, and even stress. Allergies tend to run in families, so if your parents or grandparents have allergies, you may be more likely to have them as well. Additionally, exposure to secondhand smoke, or living in an area with high levels of pollution can also increase your risk of developing allergies.
Common allergens include:
- Foods like milk, eggs, peanuts, tree nuts, soy, wheat, fish, and shellfish.
- Insects can cause allergies from bites, stings, or by just being around. Common insects include cockroaches and dust mites.
- Inhalants like pollen, dust, pet dander, mold, and fungus.
- Contact allergies include latex, plants, soap, cosmetics, and jewelry.
Allergy symptoms
Symptoms of allergies can vary from mild to severe and include:
- Sneezing
- Nasal irritation
- Runny nose
- Watery eyes
- Itching
- Rashes
- Increased heart rate
- Vomiting
Anaphylaxis - In severe cases, anaphylaxis can occur, which is a life-threatening reaction that requires immediate medical attention. Severe symptoms include:
- Wheezing
- Difficulty breathing
- Swelling in the face or throat
Allergic Rhinitis - Allergic rhinitis, also known as hay fever, is a type of allergy that affects the nose and sinuses. It is typically caused by pollen from trees, grasses, and weeds. Symptoms include:
- Sneezing
- Runny nose
- Congestion
- And other common sinus issues
