Even as we move through 2025, the primary causes of sinusitis remain consistent, though our understanding of how they interact has evolved.
Viral infections still trigger about 90% of acute sinusitis cases. Common culprits include rhinoviruses, influenza, and coronaviruses. These viruses cause inflammation that blocks sinus drainage, creating the perfect environment for infection. What’s changed is our recognition that viral sinusitis often resolves without antibiotics in 7-10 days.
Bacterial infections account for only about 2-10% of sinusitis cases, typically following a viral infection. The most common bacteria I see in my practice are Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis.
With increasing antibiotic resistance, we’re more selective about when to prescribe these medications.
Allergies remain a significant trigger, with changing climate patterns affecting pollen seasons and creating longer exposure periods. When allergies cause nasal tissue inflammation, sinuses can’t drain properly, leading to sinusitis. I’ve noticed more patients developing sinusitis from year-round allergies rather than just seasonal triggers.
Environmental factors play an increasing role, with air pollution, vaping, and e-cigarette use emerging as significant contributors to sinus inflammation in recent years.
Anatomical issues haven’t changed – deviated septums, nasal polyps, and narrow sinus passages still predispose some people to recurrent sinusitis.
What’s new in 2025 is our approach to treatment. We now emphasize addressing the underlying cause rather than just symptoms. Modern nasal irrigations, targeted anti-inflammatories, and better diagnostic tools help us distinguish between causes and treat appropriately.
If you’re experiencing sinus symptoms, ChatRx can help determine whether your sinusitis is viral, bacterial, or allergy-related and recommend the most appropriate treatment approach for your specific situation.
