- Foods - unpleasant or dangerous immune system reactions after a certain food is eaten. Top 8 food allergens: milk, eggs, peanuts, tree nuts, soy, wheat, fish, shellfish
- Insects - biting, stinging, and non-biting (cockroaches, dust mites)
- Inhalants – pollens, pet dander, dust mites, mold & fungus spores, among others
- Contact - skin rash caused by contact with a specific substance such as latex, plants, soap, cosmetics, and jewelry, among others
- Medication reactions – reaction due to an actual immune system response is rare but possible. Most medication-related issues are called “non-allergic reactions” or “adverse reactions” but still can have serious consequences.
- Anaphylaxis - a serious allergic reaction that is rapid in onset and may cause death. It typically causes more than one of the following: an itchy rash, throat or tongue swelling, shortness of breath, vomiting, lightheadedness, and low blood pressure.
Common Allergy Symptoms 3
No two people react the same to an allergen, but there are common reactions typical of many allergens. Some of these are itchiness, reddened skin, mucous membrane irritation and swelling, sneezing, watery eyes, congestion, increased heart rate, vomiting,
A common group of symptoms is grouped under the term rhinitis, including inflammation of the nasal mucous membranes, sneezing, and runny and/or itchy nose caused by irritation and congestion in the nasal passages. There are two types: allergic rhinitis and non-allergic rhinitis.
Allergic Rhinitis: This condition occurs when the body's immune system over-responds to specific, non-infectious particles such as plant pollens, molds, dust mites, animal hair, industrial chemicals (including tobacco smoke), plus some foods, medicines, and insect venom. When this occurs, sneezing, congestion, and itchy, watery eyes usually result.
Seasonal Allergic Rhinitis:
- Late March or early April: Sensitivity to tree pollen produces symptoms.
- Late summer or spring: Hayfever occurs during this time. Hypersensitivity to ragweed, not hay, is the primary cause of seasonal allergic rhinitis
- October and November: An allergic reaction to mold spores occurs as a consequence of falling leaves
Perennial Allergic Rhinitis: This type occurs year-round and can result from sensitivity to pet hair, carpeting, upholstery, and mold on wallpaper, houseplants, and other locations inside.
Non-Allergic Rhinitis: This form of rhinitis bypasses the immune system and is not due to an allergic reaction. Symptoms are triggered by environmental irritants like cigarette smoke, pollutants, strong odors, alcoholic beverages, and cold temperature. Other causes may include blockages in the nose, deviated septum, infections, and over-use of medications such as decongestants.