The main reasons for repeated sinus infections include allergies, nasal blockages like polyps or a deviated septum, a weakened immune system, infections (bacterial, viral, or fungal), and environmental irritants such as pollutants and cigarette smoke. Allergies cause immune overreactions that inflame sinuses, leading to congestion and infection. Structural issues like nasal polyps or a deviated septum can block sinus drainage, allowing mucus and germs to accumulate and cause infections. A weakened immune system lowers the body’s ability to fight infections. Additionally, chronic irritation from pollutants or smoking can impair the sinus mucus clearance system, increasing risk of infection.
Other contributing factors can be asthma, long-standing sinus inflammation, or untreated initial infections that lead to complications such as nasal polyps. Accurate diagnosis by a specialist is important for identifying underlying causes like anatomical abnormalities or persistent infections, which may require specific treatment beyond antibiotics, including nasal sprays, surgery, or allergy management.
In summary, recurring sinus infections typically result from ongoing inflammation, blockage of sinus drainage, or an immune system that is compromised or overwhelmed by allergies or irritants. Addressing the root causes and maintaining sinus health can help reduce frequency of infections.
