Allergic Rhinitis

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Condition

Allergic Rhinitis

Allergic rhinitis is a common condition that affects over 20% of the population worldwide. It occurs when the immune system overreacts to allergens, such as dust, pollen, or pet dander, resulting in inflammation of the nasal mucosa. This inflammation causes a range of symptoms, including sneezing, nasal congestion, runny nose, and itchy eyes. Allergic rhinitis can significantly impact a person’s quality of life, and it is often linked to other conditions like asthma and eczema.

Types of Allergic Rhinitis

Allergic rhinitis can be classified into two main types: intermittent and persistent.

  • Intermittent Allergic Rhinitis: Symptoms occur less than 4 days per week or less than 4 weeks per year. This is often triggered by seasonal allergens like pollen.
  • Persistent Allergic Rhinitis: Symptoms last for more than 4 days per week and for more than 4 weeks per year. Common triggers include dust mites, pet dander, and mould.

Understanding the type of allergic rhinitis you have helps guide the treatment approach.

Symptoms of Allergic Rhinitis

The symptoms of allergic rhinitis can vary but typically include:

  • Sneezing
  • Runny or stuffy nose (rhinorrhea)
  • Nasal itching
  • Itchy, red, or watery eyes
  • Postnasal drip
  • Coughing or throat irritation
  • Pressure or fullness in the ears

In severe cases, the nasal passages may become swollen, leading to significant nasal congestion and difficulty breathing through the nose. These symptoms can disrupt daily activities, sleep, and overall well-being.

Causes and Common Triggers

Allergic rhinitis is triggered by inhaling allergens that cause the immune system to overreact. Common triggers include:

One of the most common indoor allergens, especially in tropical regions like Singapore.

From trees, grass, or weeds, a major cause of seasonal allergic rhinitis.

Found in damp or humid environments.

Skin flakes and proteins from pets like cats and dogs.

Their droppings and body parts can also cause allergic reactions.

In Singapore, the house dust mite is the leading cause of allergic rhinitis due to the warm and humid climate, which provides an ideal environment for dust mites to thrive.

Associated Conditions and Complications

Allergic rhinitis is often linked with other health conditions, including:

  • Asthma: Up to 80% of people with asthma also have allergic rhinitis.
  • Nasal Polyps: Chronic inflammation can lead to the development of benign growths in the nasal passages.
  • Sinusitis: Frequent inflammation of the nasal passages can lead to acute or chronic sinus infections.
  • Eustachian Tube Dysfunction: Swelling in the nasal passages can affect the ears, causing pressure and pain.
  • Otitis Media: Inflammation can lead to middle ear infections, particularly in children.

If left untreated, allergic rhinitis can significantly impair quality of life, leading to fatigue, sleep disturbances, and reduced productivity.

Diagnosing Allergic Rhinitis

Diagnosing allergic rhinitis usually involves a combination of medical history and allergy testing. Your doctor may use one or more of the following tests:

  • Skin Prick Test: Small amounts of potential allergens are pricked into the skin to observe any reaction, such as swelling or redness.
  • Blood Test (RAST or specific IgE testing): Measures the presence of antibodies (IgE) to specific allergens in the blood.

These tests help determine what allergens trigger your symptoms, allowing for a more targeted treatment approach.

Treatment Options for Allergic Rhinitis

Treatment for allergic rhinitis depends on the severity and type of your symptoms. According to the Allergic Rhinitis and its Impact on Asthma (ARIA) guidelines, there are four main categories of treatment:

1. Environmental Control Measures and Allergen Avoidance:

  • Reduce exposure to allergens by using air purifiers, frequent cleaning, and avoiding outdoor activities during high pollen counts.

2.Pharmacological Management:

  • Antihistamines: Block the effects of histamine, reducing symptoms like itching, sneezing, and runny nose.
  • Nasal Corticosteroids: Reduce inflammation in the nasal passages, helping to relieve congestion.
  • Decongestants: Provide temporary relief from nasal congestion.

3. Immunotherapy:

  • Allergen Immunotherapy (AIT): Administered as allergy shots (subcutaneous) or drops/tablets (sublingual), it gradually desensitises the immune system to allergens, reducing long-term symptoms.

4. Surgical Options:

  • In severe or complicated cases, surgery may be needed to remove nasal polyps or correct structural issues in the nasal passages.

Prevention and Allergen Avoidance

Prevention is key to managing allergic rhinitis effectively. Here are some practical tips:

  • Use HEPA filters in your home to trap airborne allergens.
  • Wash bedding in hot water weekly to reduce dust mites.
  • Keep pets out of bedrooms and bathe them regularly.
  • Avoid outdoor activities during peak pollen seasons.
  • Keep your home dry and well-ventilated to prevent mould growth.

These strategies can help reduce exposure to common allergens, minimising the frequency and severity of allergic rhinitis symptoms.

When to Seek Medical Advice

If over-the-counter treatments do not adequately control your symptoms, or if your allergic rhinitis is interfering with your daily life, it’s essential to consult a doctor. Professional evaluation can help determine the exact cause of your symptoms and guide you towards the most effective treatment plan.

Seek medical advice if:

  • Your symptoms persist despite treatment.
  • You experience frequent sinus infections or ear problems.
  • You have asthma that is not well controlled.

O2 Lung Centre: Allergic Rhinitis Treatment in Singapore

At O2 Lung Centre, we specialise in diagnosing and treating allergic rhinitis, offering personalised care for each patient. Our allergen specialists use advanced diagnostic tools, such as skin prick tests and blood tests, to identify specific triggers and develop a tailored treatment plan. From allergen avoidance strategies to medications and immunotherapy, we provide comprehensive solutions to manage your symptoms effectively. Book a consultation with our allergen specialist today and start your journey to relief.