Common Causes of Sinus Problems

Sinus problems are common and can affect breathing, sleep, concentration, and overall quality of life. While occasional sinus congestion often improves with medication and home care, some people experience persistent sinus infections, nasal blockage, facial pressure, or difficulty breathing through the nose. When symptoms continue despite appropriate medical treatment, a specialist may recommend sinus surgery. Modern sinus surgery, particularly Functional Endoscopic Sinus Surgery (FESS), uses a small camera and specialised instruments to improve sinus drainage and ventilation. The procedure is generally performed through the nostrils, without external facial incisions. Understanding the causes of sinus problems, warning signs, treatment options, surgical procedure, and recovery process can help patients make informed decisions about their health. What Are Sinuses? The sinuses are air-filled spaces located within the bones around the nose, cheeks, forehead, and eyes. They are connected to the nasal cavity through small openings that allow mucus to drain. Healthy sinuses help maintain normal nasal function. However, when the sinus openings become blocked due to inflammation, infection, nasal polyps, or structural abnormalities, mucus may not drain properly. This can contribute to symptoms such as nasal congestion, facial pressure, and reduced sense of smell. Inflammation of the lining of the nose and sinuses is commonly called rhinosinusitis. It may be acute, meaning short-term, or chronic, meaning persistent. Not everyone with sinus symptoms needs surgery. Most acute sinus infections improve with appropriate care, and chronic symptoms are generally evaluated and treated medically before surgery is considered. What Is Sinus Surgery? Sinus surgery is a procedure used to improve sinus drainage, remove obstructing tissue, or treat specific conditions affecting the nose and sinuses. The most common operation for chronic sinus disease is Functional Endoscopic Sinus Surgery (FESS). During this procedure, the surgeon uses an endoscope—a thin instrument with a light and camera—to examine the nasal passages and access the affected sinus openings. The aim is to improve airflow and mucus drainage while preserving healthy tissue whenever possible. Sinus surgery may be considered for patients with chronic rhinosinusitis that has not improved adequately with appropriate medical treatment, certain nasal polyps, selected fungal sinus conditions, or other structural problems affecting sinus function. Common Causes of Sinus Problems Several conditions can cause sinus inflammation or blockage. 1. Viral Infections Common colds can cause inflammation of the nasal passages and sinuses. Symptoms may include a blocked nose, runny nose, facial pressure, and reduced sense of smell. Most viral infections improve without surgery. Antibiotics do not treat viral infections. 2. Bacterial Sinusitis Some sinus infections are caused by bacteria, often following a viral respiratory infection. Certain patterns of persistent, severe, or worsening symptoms may lead a doctor to suspect bacterial sinusitis. Treatment depends on the clinical assessment. Surgery is not usually required for an isolated acute infection, although complications or unusual conditions may require specialist care. 3. Chronic Rhinosinusitis Chronic rhinosinusitis involves inflammation of the nose and sinuses lasting at least 12 weeks. Symptoms may include persistent nasal blockage, nasal discharge, facial pressure, and reduced sense of smell. Diagnosis usually involves a clinical assessment and may include nasal endoscopy or CT imaging. Surgery may be considered when symptoms persist despite appropriate medical treatment and the findings support an operation. 4. Nasal Polyps Nasal polyps are soft, non-cancerous growths that develop in the lining of the nose or sinuses. They can obstruct airflow and sinus drainage. Symptoms may include a blocked nose, reduced smell, mouth breathing, and recurrent sinus problems. Medication may help control inflammation, while surgery may be recommended for selected patients with significant obstruction or persistent symptoms. Polyps can recur after surgery, so continued medical treatment and follow-up may be necessary. 5. Deviated Nasal Septum The nasal septum is the wall separating the two sides of the nose. If it is significantly deviated, it can contribute to nasal obstruction and may affect access to sinus drainage pathways. A procedure called septoplasty may be considered when the deviation causes meaningful symptoms. It is different from FESS, although both procedures may sometimes be performed together. 6. Allergies Allergic rhinitis can cause sneezing, itching, nasal congestion, and a runny nose. Allergies may contribute to ongoing nasal inflammation, but allergy symptoms alone do not necessarily mean a person has chronic sinusitis or needs surgery. Treatment may include allergen avoidance, nasal steroid sprays, antihistamines, or other options recommended by a clinician. 7. Fungal Sinus Disease Certain fungal conditions can affect the sinuses. Some cause chronic inflammation, while invasive fungal infections can be serious, particularly in people with weakened immunity or poorly controlled diabetes. The treatment depends on the type of fungal disease. Some conditions require surgery, and invasive infections may need urgent specialist care and antifungal treatment. Common Symptoms of Sinus Problems Sinus symptoms vary depending on the cause, duration, and severity of inflammation. Common symptoms include: Nasal congestion: A blocked or stuffy nose that makes breathing difficult. Facial pressure or pain: Discomfort around the cheeks, forehead, or eyes. Nasal discharge: Thick mucus or a runny nose. Postnasal drip: Mucus draining down the back of the throat. Reduced sense of smell: Difficulty detecting familiar smells or flavours. Headache: Some people experience headaches, although many headaches are unrelated to sinus disease. Cough: Often caused or worsened by mucus draining into the throat. Bad breath: This can sometimes accompany ongoing nasal or sinus problems. Sleep disturbance: Nasal blockage may interfere with comfortable sleep. Symptoms alone cannot reliably distinguish a viral infection, bacterial sinusitis, allergies, migraine, or another condition. A healthcare professional can assess the likely cause and recommend suitable treatment. When Should You Seek Medical Attention? Arrange a medical assessment if symptoms persist, frequently return, or significantly affect daily life despite appropriate treatment. Seek urgent medical attention if sinus symptoms are accompanied by swelling or redness around an eye, changes in vision, severe headache, confusion, neck stiffness, or other signs of a potentially serious complication. When Is Sinus Surgery Needed? Sinus surgery is generally considered when there is a clear medical reason and non-surgical treatment has not provided adequate relief. A specialist may discuss surgery … Read more