Sinusitis: Allergy or Infection?
Updated Jun. 08th, 2026 | Read Time: 3 Minutes | What You Will Learn:
- What is Sinusitis?
- Common Symptoms of Sinusitis
- Sinusitis Treatment Options
- Conventional Treatment
- Natural Treatment Options
- Nutritional Information
- Reader Comments (6)
An infected or irritated sinus can be just that, irritating. Symptoms can come and go or persist for days, weeks, or even months. Therefore, identifying the cause helps create a treatment plan that fits your needs. Keep reading to understand the role of the sinuses and explore the symptoms and treatment options for sinusitis.
What is Sinusitis?
The sinuses are cavities in our facial bones that normally hold air. Sinusitis is an inflammation of the lining of these cavities. It can result from an unresolved upper respiratory infection, dental infections, environmental allergies, food allergies, exposure to irritants in the air or swimming. Inflamed sinuses can be difficult to heal because the area has limited circulation and airflow. Reoccuring or persistent sinusitis may signal an overwhelmed immune system. 50-80% of those with chronic sinusitis also suffer from allergies.
What Are Common Symptoms of Sinusitis?
Sinusitis symtpoms depend on which sinus becomes infected. Pain often occurs over the affected sinus area. People may experience this pain as dull, aching, or sharp. Additionally, the pain often worsens when pressing on the bone or bending over. Greenish-yellow mucus can be blown out of a stuffy nose, and the voice becomes nasal. In acute infection, fever, fatigue and facial swelling can occur.
How Can I Treat Sinusitis?
Conventional Treatment
Conventional treatment involves the use of antibiotics or antifungal agents. This usually takes care of the current infection. However, the body becomes more susceptible to future infections if friendly bacteria are not replaced. Furthermore, antiobiotic overuse has contributed to antiobiotic-resistant strains of many organisms. Individuals can help minimize resistance by using antibiotics sparingly and always completing their prescriptions.
Natural Treatment Options
Sinusitis treatment depends on the underlying cause.
For bacterial or viral infections, some supplements may support immune function. Common options include echinacea, oregano oil, goldenseal, and vitamin C. To reduce congestion, consider NAC and eucalyptus oil.
Several homeopathic remedies may provide symptom relief for allergic sinusitis. Bioflavonoids like quercetin and grape seed extract may help support healthy histamine responses. These compounds may also help reduce sinus inflammation. Vitamin C may enhance their effectiveness. See the chart below for therapeutic dosages.
Physical Treatments
Perform steam inhalations, or use a humidifier, with eucalyptus oil.
Use hydrotherapy to boost the immune system. At the end of your shower, alternate one minute of hot water with one minute of cold water. Alternate several times, always ending with cold.
Dietary Considerations
Dietary approaches to sinusitis are as follows:
- Increase fluid intake
- Eat raw fruits and vegetables
- A deficiency of vitamin A can lead to sinusitis, be sure to eat lots of yellow/orange fruits and vegetables.
- Onions and garlic are good sources of substances that make up anti-inflammatory compounds and help to kill microbes.
- Flaxseed and fish oils contain essential fatty acids that are anti-inflammatory.
Foods To Avoid
Additionally, avoid animal products because they may contain inflammatory precursors. Avoid spicy foods, alcohol, dairy products, processed foods, white flour and sugar products, all of which increase mucous production.
If you have food allergies, remove the most commonly allergenic substances from your diet and undergo a food sensitivity assessment. Avoid milk, wheat, eggs, citrus fruits, corn and peanuts.




Thanks for the information! I will definitely try the Quercitin and Grape Seed extract in addition to the Oregano oils and Eucalyptus oils.
Hello Linda,
You're welcome, we're glad you've found some new remedies to try to help clear up your sinuses. Quercetin is a favourite amongst many in alleviating allergy symptoms and eucalyptus oil is great for opening up congested airways. It can be diffused either in a diffuser or humidifier or the oil can be mixed with a carrier oil and rubbed on the chest like chest rubs. We have more articles on allergies and each supplement if you're interested in learning more!
Have a healthy day
As an on and off again sinus sufferer this info is both very much needed and very much appreciated. It was worrisome to find out that constant flare ups can actually cause damage to the sinus lining! I never really took my sinuses too seriously but now knowing that, it seems like I should! I am familiar with a few of the supplements listed in the chart and feel comfortable with trying them when I get another flare up.
Hello,
Sinus infections or sinus flare up's are irritating, indeed. We hope some of these supplements outlined in this article are able to provide relief during your next flare up. You can also learn more about each supplement in our articles here:
https://www.nationalnutrition.ca/articles/supplements/
Have a healthy day!
I often suffer from sinusitis and recall getting a diagnosis of chronic sinusitis at some point. This was, I recall, because I was susceptible due to my small sinus passages. So, I never thought about whether or not my symptoms were a result of allergy or infection but now I want to know! It seems like my sinusitis, when I do have it, is on the milder side from your description of symptoms. Next time I have an infection, I will try to treat it as if it was allergic and then infectious if that doesn't work so I can figure it out!
Hello Rachel,
Thank you for sharing. We love hearing that our article was able to provoke questions for you to be able to ask in order to better support your health when this reoccurs.
Stay healthy & well