5 Common Causes of Chronic Sinus Infections (And How to Treat Them)

Chronic sinus infections—also known as chronic sinusitis—can leave you feeling congested, fatigued, and constantly under the weather.

While most sinus infections resolve in a few days, chronic cases last 12 weeks or longer, often resisting typical treatments. Here are 5 common causes and how to address them:

Allergies

Allergic reactions to pollen, dust mites, or pet dander can inflame nasal passages and block drainage, leading to persistent sinus issues.

Treatment: Allergy management with antihistamines, nasal sprays, or immunotherapy.

Nasal Polyps

These benign growths in the nasal passages can obstruct airflow and sinus drainage.

Treatment: Corticosteroid sprays, or surgery for larger polyps.

Deviated Septum

A misaligned nasal septum can hinder sinus drainage and promote infection.

Treatment: Septoplasty (surgical correction) if symptoms are severe.

Infections

Bacterial or fungal infections can linger and become resistant to initial treatments.

Treatment: Targeted antibiotics or antifungals, sometimes sinus irrigation.

Environmental Irritants

Exposure to smoke, pollution, or chemical fumes can aggravate sinuses over time.

Treatment: Avoidance and using HEPA filters at home.

If you’re experiencing ongoing sinus issues, it’s worth seeing an ENT specialist for a comprehensive evaluation.

Your Health, Our Priority

Contact us today to schedule a visit with our ENT or audiology specialists.