“Every spring, I get sick. Then it happens again in the fall.”
If you have frequent sinus symptoms that follow a seasonal pattern, allergies may be the root cause. Seasonal allergies can cause congestion, drainage, facial pressure, and fatigue. The inflammation they trigger can also increase the risk of bacterial sinusitis, a common form of sinus infection.
There are plenty of possible allergy triggers in North Texas. Mountain cedar pollen is prevalent in winter, trees and grasses pollinate in spring and summer, and ragweed arrives in fall. Indoor allergens such as dust mites and mold can cause symptoms throughout the year.
Recurrent acute rhinosinusitis (RARS) is the medical term for having four or more sinus infections in a year. In a recent research review, my colleagues and I found that 29%-57% of adults with that condition also had allergic rhinitis, which is commonly referred to as “hay fever.”
Our research found a strong association between recurrent sinus infections and allergies. And the good news is that allergies are highly treatable. If you have a pattern of seasonal sinus infections that keep coming back, getting a precise diagnosis is the first step toward finding a lasting treatment.
Why do sinus problems keep coming back?
Seasonal sinus infections often start with a simple cold virus that inflames the lining of the nose, swelling the tissue and narrowing the small openings that drain the sinuses. As a result, mucus becomes harder to clear, and bacteria can easily grow in the trapped secretions.
Several factors can make that sequence more likely:
● Frequent exposure to viruses. Parents of young children, teachers, flight attendants, frequent travelers, and people who spend time in crowded settings have more opportunities to catch respiratory viruses.
● Allergic rhinitis. Allergic inflammation causes swelling and can slow the normal movement of mucus through the nose and sinuses. That can make viral infections more likely to trigger a longer episode. In the U.S., 15%-20% of the population have allergic rhinitis, and the condition drives an estimated $3 billion in annual medical costs.
● Narrow drainage pathways. The maxillary sinuses beneath the cheeks drain through an opening about 2-3 millimeters wide. A severely deviated septum or a concha bullosa – an air-filled pocket in one of the nose’s bony structures – can further narrow a drainage pathway.
● Immune or other health conditions. Antibody deficiencies and immune conditions such as HIV or living with a transplant can predispose people to RARS.
Allergies may also increase susceptibility to sinus infections at the cellular level. One possible factor is intercellular adhesion molecule-1 (ICAM-1), a protein found on cells lining the nose. Most rhinoviruses, which cause the common cold, use ICAM-1 to enter cells. Researchers in the United Kingdom have found higher ICAM-1 expression in people who have allergies.
How can I tell what’s causing my sinus symptoms?
Allergies, viral colds, and bacterial sinusitis share symptoms such as congestion, drainage, pressure, and reduced sense of smell. The timing and course of an illness are often more informative than mucus color, which cannot reliably identify a bacterial infection.
Here's what to look for:
- Allergies often cause symptoms such as repeated sneezing, itchy or watery eyes, and clear drainage that are tied to a season or a specific exposure.
- Viral respiratory infections usually peak within three or four days and begin to improve within seven to 10 days.
- Acute bacterial sinusitis becomes more likely when symptoms last at least 10 days without improvement or begin to improve but worsen again. Clinicians sometimes call the second pattern “double worsening.”
- RARS means at least four distinct, acute episodes of acute sinusitis in one year, with at least one episode confirmed by a physician through testing or imaging. In between episodes, patients’ respiratory health returns to baseline.
- Chronic sinusitis involves at least 12 weeks of ongoing symptoms plus objective evidence of inflammation. Patients may have temporary flares, but the underlying symptoms never fully resolve.
These distinctions matter. A patient who tells me, “I get five sinus infections a year,” may be having allergies, recurrent colds, true bacterial infections, chronic inflammation, or a combination of these. A Harvard study conducted in the mid-2000s estimated the average person with RARS will miss over four workdays a year and face more than $1,000 in direct healthcare costs associated with the condition. (Today, that dollar figure would be closer to $1,500 a year.)
What are your symptoms?
Diagnosing your sinus symptoms begins with some questions. We ask:
- Which symptoms do you have?
- How long do symptoms last?
- Did you ever fully recover?
- What time of year do the episodes occur?
- How often are antibiotics prescribed?
- How frequently are you exposed to children or crowded environments?
- Do you have asthma, eczema, or infections elsewhere in the body that might suggest an immune problem?
If you’re suffering from sinus problems, keep a record of when your symptoms start, how long they last, and what treatments you’ve tried. This information can reveal patterns that may make your diagnosis more accurate.
Seeing a doctor while you still have symptoms is key – examining the nose during an active episode can help confirm whether the symptoms represent sinusitis. The doctor may also perform a nasal endoscopy, which uses a thin scope to look inside the nose, to evaluate potential causes.
If we suspect allergies are playing a role in your condition, allergy testing can help identify your environmental or seasonal triggers. Select patients may also benefit from blood tests for antibody deficiencies, particularly when they have recurrent pneumonia, unusual infections, hospitalizations, or symptoms that continue despite appropriate treatment.
What are the treatment options?
For symptoms that have lasted less than a week and are beginning to improve, treatment usually focuses on comfort. Depending on the cause and severity of symptoms, options can include:
- Acetaminophen or ibuprofen for pain
- Corticosteroid nasal spray to reduce inflammation
- Saline spray or irrigation to thin and remove mucus
For more severe or longer-lasting symptoms, decongestants can provide relief. Be aware that decongestant nasal sprays can cause rebound congestion when used for more than three days, and oral decongestants can raise blood pressure or cause palpitations, irritability, and insomnia.
A neti pot or nasal irrigation device can also provide quick relief. Follow the manufacturer’s cleaning instructions and use only distilled, sterile, or previously boiled and cooled water. Tap water is not safe for nasal rinsing, as it can introduce contaminants into your sinuses.
An effective treatment strategy targets the factors that set off repeated episodes. For allergic rhinitis, that may include:
- Reducing exposure to known triggers
- Using a corticosteroid nasal spray consistently
- Taking antihistamines
- Getting allergen immunotherapy, such as allergy shots
Patients in my practice sometimes report that they have fewer respiratory illnesses after starting immunotherapy. However, more research is needed to understand whether immunotherapy specifically prevents RARS.
Surgery may be an option for certain patients with confirmed RARS or chronic sinusitis whose symptoms disrupt daily life despite appropriate treatment. Endoscopic sinus surgery widens the natural drainage pathways and can be used to address deviated septum and other sinus obstructions. Endoscopic sinus surgery is performed under real-time, 3D CT imaging guidance, giving the surgeon a clear view of your nasal and sinus structures. This technology helps surgeons navigate complex sinus anatomy and minimize disruption to these delicate tissues.
Why antibiotics aren’t always the answer
Antibiotics do not treat allergies or viral infections. Taking them will not make you feel better unless you have a bacterial infection. In fact, antibiotics can cause side effects such as nausea or diarrhea that may make you feel worse.
How can I reduce my risk of sinus infections?
No single step prevents every respiratory infection. The best treatment plans address symptoms through a proactive, comprehensive approach. Here are a few tips to help reduce your risk of allergy-related sinus infections:
● Stay ahead of allergies. Start taking your recommended medication before the allergy season begins. Follow allergy best practices, such as monitoring pollen counts, keeping windows closed when counts are high, and showering and changing clothes after extended time outdoors.
● Reduce the spread of viruses. Wash your hands regularly, avoid touching your eyes and nose, and use hand sanitizer when soap and water are unavailable.
● Wear a face mask in crowded places. A well-fitting face mask can reduce exposure in settings such as airports and grocery stores, particularly when respiratory illnesses are circulating.
Recurrent acute sinusitis causes repeated disruption that reduces your quality of life. But you don’t have to live with frequent coughing, sneezing, and stuffiness that makes you miss work and lose sleep.
If your sinus symptoms follow a seasonal pattern, return four or more times a year, or never fully resolve, talk with a doctor about whether allergies may be to blame. Treating the underlying allergy, chronic inflammation, or structural issue can help break the cycle of recurring sinus symptoms and infections.
To talk with an expert about sinus problems or allergies, make an appointment by calling 214-645-8898 or request an appointment online.
