About Allergic Rhinitis
The root causes of allergic rhinitis include:
- Exposure to allergens: Allergic rhinitis is triggered by the immune system's response to allergens such as dust mites, pollen, pet dander, and mold spores. When these allergens enter the body, they bind to specific antibodies called IgE, leading to the release of inflammatory substances like histamine.
Non-modifiable risk factors of allergic rhinitis cannot be changed or controlled. This includes:
- Genetic factors: Allergic rhinitis tends to run in families, suggesting a genetic factor. If one or both parents have allergic rhinitis or other allergic conditions like asthma or eczema, the risk of developing allergic rhinitis is higher.
Modifiable risk factors of allergic rhinitis can be influenced or changed. These include:
- Environmental factors: Exposure to certain environmental factors can increase the risk of developing allergic rhinitis. These include air pollution, tobacco smoke, occupational exposures (such as chemicals or dust), and living in urban areas.
- Lifestyle factors: Certain lifestyle choices may contribute to the development of allergic rhinitis. These include exposure to second-hand smoke, poor diet, lack of physical activity, and high stress levels.
It's important to note that while these risk factors may increase the likelihood of developing allergic rhinitis, they do not mean it will happen. If you have concerns about your risk or symptoms of allergic rhinitis, it's best to consult with a healthcare professional for an accurate diagnosis and appropriate management.
The most common early symptoms of allergic rhinitis include:
- Sneezing
- Runny nose
- Stuffy nose
- Itchy nose
- Coughing
- Sore or scratchy throat
- Itchy eyes
- Watery eyes
- Dark circles under the eyes
As allergic rhinitis progresses or becomes more severe, additional symptoms may occur, including:
- Frequent headaches
- Eczema-type symptoms, such as dry, itchy skin that can blister and weep
- Hives
- Excessive fatigue
It's important to note that some symptoms, like recurrent headaches and fatigue, may only happen after long-term exposure to allergens. Additionally, some individuals may experience symptoms all year long, while others may only experience symptoms occasionally. If your symptoms last for more than a few weeks and don't seem to be improving, it's recommended to talk to your doctor about possible allergies. They can provide guidance on appropriate management strategies.
Examinations, tests, and procedures commonly performed to diagnose allergic rhinitis include:
- Comprehensive history and physical examination: Your doctor will ask about your symptoms, medical history, and potential triggers. They will also examine your nose, throat, and eyes.
- Skin prick test: This test involves placing small amounts of allergens on your skin and then pricking or scratching the skin to see if there is an allergic reaction. If you are allergic to a substance, a small red bump will appear.
- Radioallergosorbent test (RAST): This test measures the amount of specific antibodies (IgE) to particular allergens in your blood. It helps identify which allergens you are allergic to.
Additional examinations, tests, and procedures to determine the severity of allergic rhinitis may include:
- Rhinitis control assessment: Your doctor will evaluate how well your symptoms are controlled and the impact on your daily life.
- Nasal inspiratory flow measurement: This test assesses how well air flows through your nasal passages. It can help determine the degree of nasal obstruction.
- Sputum induction: In this procedure, you are asked to cough deeply to produce sputum (mucus from your lungs). The sputum is then analyzed for signs of inflammation.
- Spirometry: This lung function test measures how much air you can inhale and exhale forcefully. It helps assess lung function and detect any associated respiratory conditions.
It's important to note that the specific tests performed may vary depending on individual circumstances. It's best to consult with a healthcare professional for a personalized evaluation.
The goals of treatment for allergic rhinitis are to relieve symptoms and improve quality of life. Here are the recommended treatment options and how they work:
- Allergen avoidance: The first-line treatment involves avoiding relevant allergens and irritants like house dust mites, mold, pets, and pollens. This can be achieved by using allergen-proof covers for bedding and keeping humidity in the home below 50%.
- Nasal saline irrigation: This involves rinsing the nasal passages with a saline solution to reduce congestion and remove allergens.
- Oral antihistamines: These medications block the effects of histamine, a chemical released during an allergic reaction, to relieve symptoms like sneezing, itching, and runny nose.
- Intranasal corticosteroids: These sprays reduce inflammation in the nasal passages, relieving congestion, sneezing, and itching.
- Combination intranasal corticosteroid/antihistamine sprays: These sprays combine the benefits of corticosteroids and antihistamines to provide comprehensive symptom relief.
- Leukotriene receptor antagonists (LTRAs): These medications block the action of leukotrienes, chemicals that cause inflammation in the airways.
- Allergen immunotherapy: This involves gradually exposing the body to increasing amounts of allergens to build tolerance over time. It can reduce symptoms and prevent the development of other allergies or asthma.
- Decongestants: These medications temporarily relieve nasal congestion by constricting blood vessels in the nasal passages. However, they should only be used for short periods due to potential side effects.
- Oral corticosteroids: In severe cases or when other treatments fail, short courses of oral corticosteroids may be prescribed to reduce inflammation.
It's important to note that treatment should be individualized based on symptoms and medical history. Always consult with a healthcare professional for personalized advice.
Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Side effects can occur. Check with your health care professional or read the information provided with your medication for side effect information.