Chronic Sinusitis: Facial Pressure, CT Diagnosis, and Treatment Options

Chronic sinusitis, also called chronic rhinosinusitis, is long-lasting inflammation of the nose and sinus passages that can cause facial pressure, blocked breathing, thick drainage and reduced smell. Diagnosis is based on symptoms plus objective findings, often including nasal endoscopy or a CT scan when symptoms persist or surgery is being considered.

Overview

Chronic sinusitis is a common ear, nose and throat condition in which the lining of the nasal passages and sinuses stays inflamed for a prolonged period. Doctors often use the term chronic rhinosinusitis because the nose and sinuses are connected and usually become inflamed together. In most guidelines, symptoms lasting 12 weeks or longer raise the possibility of chronic sinusitis, especially when there is evidence of inflammation on examination or imaging.

The sinuses are air-filled spaces in the bones around the nose, cheeks, forehead and eyes. They help warm and humidify air and allow mucus to drain through small openings into the nose. When the lining becomes swollen, drainage can slow down, mucus may thicken, and a person may notice congestion, facial pressure, postnasal drip or a reduced sense of smell.

Chronic sinusitis is different from a short viral upper respiratory infection. It is also not always caused by bacteria, which is why antibiotics are not the main treatment for every patient. The condition can occur with nasal polyps, without polyps, or alongside allergies, asthma or structural nasal problems. With the right evaluation, most people can find a treatment plan that reduces symptoms and improves daily comfort.

Symptoms: Facial Pressure and Other Signs

Facial pressure is one of the symptoms people most often associate with sinus disease. It may be felt over the cheeks, between the eyes, across the forehead or around the upper teeth. In chronic sinusitis, the feeling is often described as fullness, heaviness or pressure rather than sharp pain. Symptoms may fluctuate from day to day and can worsen during respiratory infections, allergy seasons or exposure to irritants.

Doctors look for a pattern of symptoms rather than one symptom alone. Chronic sinusitis commonly causes two or more of the following: nasal obstruction, thick nasal discharge or postnasal drip, reduced or lost sense of smell, and facial pressure or discomfort. Some people also report cough, throat clearing, ear pressure, bad breath, fatigue or sleep disturbance related to nasal blockage.

It is important to know that facial pain by itself is not always due to sinusitis. Migraine, tension-type headache, dental problems, jaw joint disorders and nerve-related pain can feel similar. This is one reason an ENT assessment can be helpful, particularly when facial pressure persists despite usual care or when imaging does not show significant sinus inflammation.

• Congestion: difficulty breathing through one or both sides of the nose.
• Drainage: thick mucus from the nose or mucus dripping down the throat.
• Smell changes: reduced smell or taste, especially in people with nasal polyps.
• Pressure: fullness around the cheeks, forehead, bridge of the nose or eyes.

Causes and Risk Factors

Chronic sinusitis usually develops from ongoing inflammation rather than a single cause. The sinus drainage pathways can become narrowed by swelling, polyps or anatomy, making it harder for mucus to clear. Inflammation may be driven by allergies, respiratory irritants, immune responses, asthma-related airway disease or repeated infections. In many patients, more than one factor is involved.

Nasal polyps are soft, noncancerous inflammatory growths that can block airflow and reduce smell. They are more common in adults with asthma or sensitivity to aspirin and other nonsteroidal anti-inflammatory drugs, a condition sometimes called aspirin-exacerbated respiratory disease. Other contributors can include a deviated nasal septum, enlarged turbinates, prior nasal injury, dental infection affecting the maxillary sinus, or, less commonly, immune system problems.

Environmental and lifestyle factors may also influence symptoms. Cigarette smoke, air pollution, strong odors, workplace dust and poorly controlled allergic rhinitis can irritate the nasal lining. Dry air and frequent viral infections may add to the burden. Identifying and managing these factors can be an important part of long-term care, even when medication or surgery is also needed.

Diagnosis and the Role of CT Scans

Diagnosis begins with a careful medical history and examination. The doctor asks about the duration of symptoms, nasal blockage, drainage, smell changes, facial pressure, allergies, asthma, previous infections, dental history and prior treatments. A basic nasal examination may show swelling, mucus, a deviated septum or possible polyps, but deeper areas are often not visible without special instruments.

Nasal endoscopy is a common ENT procedure that uses a thin camera to inspect the inside of the nose and sinus drainage areas. It can help identify polyps, pus-like drainage, swelling, bleeding or structural narrowing. Endoscopy can also help guide a culture in selected cases, such as persistent infection-like symptoms that have not improved with standard treatment.

A CT scan of the sinuses is the main imaging test for chronic sinusitis. It provides detailed pictures of the sinus cavities, drainage pathways and surrounding bone. CT can show which sinuses are inflamed, whether openings are blocked, and whether anatomy may affect treatment planning. It is especially useful when symptoms persist despite appropriate medical therapy or when endoscopic sinus surgery is being considered.

CT results need careful interpretation. Mild mucosal thickening can appear after a recent cold and may not explain all symptoms. Conversely, people with significant inflammation may not always have severe pain. For this reason, doctors combine CT findings with symptoms, examination and endoscopy rather than relying on imaging alone. MRI is not usually the first test for routine chronic sinusitis, but it may be used when the doctor needs more information about soft tissues or unusual findings.

Treatment Options

Treatment is tailored to the type and severity of chronic sinusitis, the presence of nasal polyps, other conditions such as allergy or asthma, and the patient’s response to previous therapy. The first goal is to reduce inflammation, improve mucus drainage and relieve nasal blockage. Many patients improve with a consistent medical plan over several weeks, rather than with a single short course of medicine.

Saline nasal rinses are often recommended because they help clear mucus, allergens and irritants from the nasal passages. Intranasal corticosteroid sprays are a standard anti-inflammatory treatment and may be particularly helpful for congestion and nasal polyps. Correct spray technique matters: the spray is usually aimed slightly outward, away from the middle of the nose, to improve comfort and coverage. Antihistamines or allergy treatment may be added when allergic rhinitis is part of the problem.

Antibiotics are not needed for every case of chronic sinusitis because persistent inflammation is not always bacterial. A doctor may consider antibiotics when there are signs of bacterial flare, such as increased purulent drainage, worsening symptoms after improvement, or culture-supported infection. Short courses of oral corticosteroids may be considered for selected patients with significant nasal polyps, but they are used carefully because they can have side effects. For severe chronic rhinosinusitis with nasal polyps that remains uncontrolled, biologic medicines may be an option for carefully selected patients under specialist care.

Endoscopic sinus surgery may be recommended when symptoms and objective findings continue despite appropriate medical treatment, or when anatomy prevents adequate drainage. The goal is to open blocked sinus pathways, remove obstructing polyps or diseased tissue, and improve access for ongoing topical treatments. Surgery does not replace long-term inflammation control, so saline rinses, nasal steroid therapy or allergy management may still be needed afterward. The best results usually come from a shared plan between the patient and an ENT specialist.

Prevention and Self-Care

Self-care cannot cure every case of chronic sinusitis, but it can reduce irritation and support medical treatment. Regular saline irrigation, when recommended by a clinician, may help keep mucus moving and decrease crusting or postnasal drip. People should use sterile, distilled, previously boiled and cooled, or properly filtered water for nasal rinses to avoid introducing harmful organisms.

Managing triggers is also important. Patients with allergies may benefit from allergen avoidance, appropriate medications or allergy testing when symptoms are persistent. Avoiding tobacco smoke and reducing exposure to strong fumes, dust and pollutants can help calm the nasal lining. Adequate hydration and humidifying very dry indoor air may improve comfort, although overly damp environments can encourage mold growth.

Good general health habits support the immune system and airway function. Hand hygiene, staying up to date with recommended vaccinations, treating reflux or asthma when present, and addressing dental infections promptly may all reduce factors that worsen sinonasal symptoms. Patients should avoid overusing topical nasal decongestant sprays, because repeated use for more than a few days can cause rebound congestion and make nasal blockage worse.

When to See a Doctor

A person should consider seeing a doctor when nasal blockage, thick drainage, facial pressure or smell loss lasts more than 10 days without improvement, keeps returning, or continues for 12 weeks or longer. Medical review is also helpful when symptoms affect sleep, work, exercise or quality of life. An ENT specialist can determine whether chronic sinusitis, allergy, migraine, dental disease or another condition is the main cause.

Urgent medical care is needed for uncommon but important warning signs. These include swelling or redness around the eye, vision changes, severe or unusual headache, confusion, neck stiffness, high fever, repeated vomiting, or swelling of the forehead. These symptoms do not mean a complication is certain, but they should be assessed promptly.

People who have asthma, immune system disorders, previous sinus surgery, nasal polyps, frequent infections or one-sided persistent symptoms may benefit from earlier specialist evaluation. Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals diagnose and treat sinus and nasal conditions for international patients, including cases that require coordinated ENT, allergy, pulmonology or imaging assessment.

Frequently asked questions

How long does sinusitis have to last to be considered chronic?

Chronic sinusitis is generally considered when symptoms last 12 weeks or longer. Doctors also look for objective evidence of inflammation, such as findings on nasal endoscopy or a sinus CT scan.

Does facial pressure always mean a sinus infection?

No. Facial pressure can occur with chronic sinusitis, but migraine, dental problems, jaw joint disorders and other headache conditions can feel similar. A doctor can help distinguish the cause by reviewing symptoms, examining the nose and considering imaging when appropriate.

Is a CT scan necessary for chronic sinusitis?

A CT scan is not always the first step, especially for mild or short-term symptoms. It is often used when symptoms persist despite treatment, when the diagnosis is uncertain, or when surgery is being planned.

Can chronic sinusitis be treated without antibiotics?

Yes. Many cases are driven mainly by inflammation rather than ongoing bacterial infection. Saline rinses, intranasal corticosteroids, allergy management and trigger reduction are common first-line approaches, while antibiotics are used selectively when bacterial infection is suspected.

When is sinus surgery considered?

Endoscopic sinus surgery may be considered when appropriate medical treatment does not provide enough relief and examination or CT confirms ongoing sinus disease. The aim is to improve drainage and allow topical medicines to reach the sinus passages more effectively.

Can chronic sinusitis come back after treatment?

Yes, symptoms can recur because chronic sinusitis is often related to long-term inflammation, allergies, asthma or nasal polyps. Ongoing care, such as nasal steroid sprays, saline rinses and trigger control, may help reduce flare-ups.

References

• American Academy of Otolaryngology-Head and Neck Surgery
• European Position Paper on Rhinosinusitis and Nasal Polyps
• Mayo Clinic
• National Institute for Health and Care Excellence
• World Health Organization

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.