What is Allergic Rhinitis?
Allergic rhinitis, commonly known as hay fever, occurs when a person breathes in particles which they are allergic to. This makes the inside of their nose, eyes, and airway very sensitive and cause cold-like symptoms.
What are the possible causes of Allergic Rhinitis?
Allergic rhinitis results from an over reaction of the immune system to particles which they are allergic to.
You may be more likely to develop allergic rhinitis if you:
- Have parents or siblings who have allergic rhinitis
- Have other allergy-related illnesses such as eczema (a skin condition which causes dry and itchy patches on the skin) and asthma
- Had exposure to cigarette smoke before birth and in the first year of life
- Have frequent exposure to allergens (particles that can cause allergic reactions)
While each person who suffers from allergic rhinitis may be allergic to different particles, some common allergens include:
- Dust mites (the most common allergen for Singapore)
- Animal/Pet dander (tiny flakes of skin)
- Insect droppings
- Mould
- Pollen
What are the symptoms of Allergic Rhinitis?
Symptoms of allergic rhinitis may be similar to that of a common cold and include:
- Runny nose with clear mucus
- Blocked or stuffy nose
- Itchy nose
- Frequent sneezing
- Itchy red eyes with frequent tearing
- Postnasal drip (and cough due to postnasal drip)
How is allergic rhinitis different from colds:
- Duration of symptoms: Allergic rhinitis typically occurs suddenly when you encounter allergens and can end abruptly. The common cold takes 3 to 14 days to resolve.
- Appearance of mucus. For allergic rhinitis, mucus from the nose and tears from the eyes that will be clear. For colds, mucus may be thicker, and appear greenish or yellowish.
- Allergic rhinitis does not cause fever or muscle ache.
- Allergic rhinitis rarely causes sore throat.
What can I do to treat Allergic Rhinitis?
Allergic rhinitis can be treated using the following medications which may be found over the counter except for cough suppressants and nasal steroid sprays. You can ask a healthcare professional to recommend a suitable treatment.
Medications | Use |
| Nasal steroid sprays |
|
|
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| Nasal (Steroid + Antihistamine) sprays |
|
Decongestants (topical or oral) |
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| Cough suppressants | Cough suppressants do not resolve allergic rhinitis but may be taken to reduce cough caused by allergic rhinitis |
| Eye drops containing antihistamine and/or decongestant or other anti-allergy medication |
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Some products contain a combination of the above groups of medication to treat 2 – 3 symptoms at the same time.
If you take more than one medication containing a combination of products, please check the ingredients of both products to ensure you do not accidentally consume the same ingredient twice.
You may also check with a healthcare professional to be sure.
When do I need to see a doctor?
Although allergic rhinitis can be treated without consulting a doctor, there are times when it might be more serious. You should see a doctor if you have any of the following symptoms:
- Cough with thick yellow or green mucus or phlegm from the nose, throat or ears
- Fever of more than 37.5°C that does not go away
- Shortness of breath
- Chest pain
- Allergies continue to worsen despite treating it yourself
- No improvement in symptoms after using nasal steroid sprays regularly for more than 2 weeks
- Allergy symptoms which are so severe that they affect your sleep and activities
What else can I do to manage Allergic Rhinitis?
Allergic rhinitis can also be managed by finding out the source of your allergies and avoiding them as far as possible.
Some methods which you can use to avoid allergens include:
- Encase mattresses, pillows and bolsters with House Dust Mite (HDM)-proof covers.
- Wash bedding with hot water (55-60 °C) frequently to remove dust mites.
- Remove rugs or carpets, and minimise items on the bed (e.g. stuffed toys, cushions) which may collect dust.
- Keep pets out of the bedroom and off the furniture.
- Take steps to avoid agitation of dust to reduce allergen exposure
- Vacuum and mop frequently to get rid of the dust mites and insect droppings in your house.
- Use air purifiers containing High-Efficiency Particulate Air (HEPA) filters to remove allergens from your living environment
Some non-medication methods which may reduce symptoms include:
- Steam inhalation (also used as an additional treatment option)
- Using saline nasal spray or nasal irrigation
- Applying natural oils, sprays or ointments containing eucalyptus, menthol or camphor onto your chest, neck and back to help you to breathe better
- Stay hydrated with plenty of water unless your doctor has advised you to limit your fluid intake
Disclaimer
This article is jointly developed by members of the National Medication Information workgroup. The workgroup consists of cluster partners (NHG Health, National University Health System and SingHealth), community pharmacies (Guardian, Unity and Watsons) and Pharmaceutical Society of Singapore. The content does not reflect drug availability and supply information in pharmacies and healthcare institutions. You are advised to check with the respective institutions for such information.
The content above is solely for informational purposes only and is not intended as a substitute for the advice provided by your physician, pharmacist or other healthcare professional. You should not use the information for diagnosing or treating a health problem or disease, or prescribing any medication or other treatment. Always speak with your physician, pharmacist or other healthcare professional before taking any medication or supplement, or adopting any treatment for a health problem.
Contributed By
- Pharmaceutical Society of Singapore