For many Houston residents, “sinus season” can hit hard when October rolls around. Nasal congestion, headaches and facial pressure may become familiar parts of fall and early winter -- but determining what is causing those symptoms is not always easy.
Houston’s warm climate and humidity allow environmental allergens to remain active throughout much of the year. Weed pollen, including ragweed, can persist into November, while mold spores may remain elevated during the fall and beyond. These triggers can cause allergies, but they may also contribute to inflammation that prevents the sinuses from draining properly.
So, how can you tell whether you are experiencing seasonal allergies, a sinus infection or another sinus condition -- and when is it time to see a specialist?
Allergies and sinus infections can feel similar
According to Kaplan Sinus Relief ENT doctors, allergies occur when the immune system reacts to a normally harmless substance, such as pollen, mold, dust mites or pet dander. Exposure can lead to swelling inside the nose, congestion and increased mucus production.
Common allergy symptoms include:
- Sneezing
- Itchy or watery eyes
- An itchy nose or throat
- Clear, watery nasal drainage
- Congestion
- Symptoms that change with the weather, pollen count or environment
A sinus infection, also called sinusitis, develops when the tissue lining the sinuses becomes inflamed. This inflammation can block normal drainage and allow mucus to collect inside the sinus cavities.
Sinusitis may cause:
- Facial pain or pressure
- Pressure behind the eyes, cheeks or forehead
- Thick nasal drainage
- Postnasal drip
- Reduced sense of smell
- Headache or pressure that worsens when bending forward
- Ear pressure or fullness
- Sometimes a fever
One important difference is the pattern. Allergy symptoms may appear soon after exposure to a trigger and continue as long as that exposure lasts.
A short-term sinus infection often begins after a cold and may improve within seven to 10 days. Symptoms that last longer, initially improve and then become worse, or repeatedly return may require further evaluation.
Can allergies turn into sinus trouble?
Allergies and sinus infections are different conditions, but they can be connected.
Kaplan specialists say when allergies cause ongoing swelling inside the nose, the openings that allow the sinuses to drain may become narrowed or blocked. Trapped mucus can create pressure and an environment in which an infection may develop.
Dust can produce a similar chain of events. Dust does not necessarily cause a sinus infection by itself, but it may contain dust mites, mold spores, pollen and other particles that irritate the nasal passages. For someone with allergies or an existing drainage problem, that irritation may contribute to worsening sinus symptoms.
Environmental triggers are not the only possible cause. Recurring sinus infections may also be associated with chronic inflammation, nasal polyps, a deviated septum or other anatomical conditions that interfere with airflow and drainage.
That is why repeatedly treating congestion without identifying its source may provide only temporary relief.
What about a sinus headache?
A true sinus headache is generally associated with inflammation or blockage inside the sinus cavities. It often feels like pressure across the forehead, cheeks or bridge of the nose and may occur alongside congestion, postnasal drip, thick mucus or ear fullness.
However, facial pressure does not automatically mean the sinuses are responsible. Migraines, tension headaches and dental problems can sometimes produce similar discomfort.
For occasional symptoms, at-home measures may help ease sinus pressure. These may include staying hydrated, applying a warm compress, breathing in steam and using a saline nasal rinse. When rinsing the nose, use distilled, sterile or previously boiled and cooled water rather than water directly from the tap.
Tracking Houston’s pollen and mold levels may also help identify a pattern. On high-pollen days, consider keeping windows closed, showering and changing clothes after spending time outside, and using a HEPA air purifier indoors.
[Related: Allergy season never really ends in Houston -- here’s what you can do about it]
These steps may make mild symptoms more manageable, but frequently recurring facial pressure or headaches deserve a closer look.
When should you see a sinus specialist?
A primary care provider can often evaluate a mild, short-term illness or an uncomplicated sinus infection. An ear, nose and throat specialist, or ENT, may be more appropriate when symptoms become persistent, recurring or difficult to treat.
According to Kaplan Sinus Relief’s guidance on when to visit an ENT, consider a specialist evaluation when:
- Symptoms last longer than 10 to 14 days
- Symptoms improve and then become worse
- Congestion or facial pressure continues for weeks
- Sinus infections occur three or more times per year
- Over-the-counter remedies no longer provide adequate relief
- Previous treatment has not prevented symptoms from returning
- Symptoms regularly disrupt sleep, concentration, work or daily activities
Seek prompt medical attention for severe or sudden facial pain, swelling around the eyes, vision changes, confusion, a stiff neck or a high fever.
An ENT evaluation may include a discussion of symptoms, allergies and previous treatments, followed by an examination of the nose and sinus openings. In some cases, a nasal endoscopy or CT scan may be used to look for inflammation, polyps, a deviated septum or other drainage problems.
Treatment depends on what the evaluation finds. Options may include allergy management, saline irrigation, nasal medications or treatment for an infection.
For qualifying patients with chronic sinusitis or blocked sinus passages, an ENT may also discuss procedures designed to improve drainage, including balloon sinuplasty.
The calendar alone cannot determine whether symptoms are allergies or a sinus condition. Duration, recurrence and response to treatment provide important clues. If every fall brings the same congestion -- or the pressure never fully goes away -- an evaluation may help identify what is keeping the cycle going.
To learn more about persistent congestion, recurring sinus infections and available treatment options, visit Kaplan Sinus Relief.