Many of us already know that sinus conditions can trigger headaches and congestion, but a new study from Taipei Medical University says the inflammation that causes the pain and pressure of a sinus infection also increases the odds of suffering a stroke. UTMB’s Dr. Meera Gupta explains that sinus infections are most commonly caused by the same viruses associated with the common cold. When a virus sets up shop in your sinuses, it produces inflammation that causes the telltale pressure around the nose and eyes.