Chronic Sinusitis: Symptoms, Causes, and Treatment

Chronic sinusitis is persistent sinus inflammation lasting 3 months or longer. Unlike temporary sinus infections, it causes ongoing nasal congestion, facial pressure, and reduced smell. Common causes include allergies, nasal polyps, and repeated infections. Treatment focuses on reducing inflammation and managing symptoms with medications and sometimes surgery.

In plain words

Chronic sinusitis is a long-term sinus problem. It causes sinus inflammation for 12 weeks or more, even with treatment. Symptoms include a stuffy nose, facial pain, and trouble smelling. It differs from a short-term sinus infection that goes away in a few weeks. Chronic sinusitis lasts much longer and can affect your daily life. Causes include allergies, nasal polyps, or repeated infections. Doctors use medicine, nasal sprays, and sometimes surgery to treat it. Managing symptoms like avoiding irritants and using saline rinses can also help.

What is Chronic Sinusitis: Symptoms, Causes, and Treatment?

Chronic sinusitis is persistent sinus inflammation lasting 3 months or longer. Unlike temporary sinus infections, it causes ongoing nasal congestion, facial pressure, and reduced smell. Common causes include allergies, nasal polyps, and repeated infections. Treatment focuses on reducing inflammation and managing symptoms with medications and sometimes surgery.

Symptoms

Early symptoms

  • Nasal congestion: Persistent stuffy nose lasting 12 weeks or longer, often resistant to typical decongestants. Breathing through the nose feels difficult. (2) (3)
  • Thick nasal discharge: Green or yellow mucus that may drain from your nose or down the back of your throat (postnasal drip). (2) (4)
  • Facial pain or pressure: Discomfort in forehead, cheeks, or between the eyes that worsens when bending forward. (2) (5)
  • Reduced sense of smell and taste: Difficulty smelling and tasting food properly, sometimes persisting for months. (2) (4)
  • Ear pressure or fullness: A sensation of fullness or pressure in ears due to sinus passages being blocked. (4) (5)
  • Cough that worsens at night: Persistent cough caused by postnasal drip, often more noticeable when lying down. (4) (3)

Serious or emergency symptoms

  • Severe headache or facial pain: Intense pain not relieved by over-the-counter pain medications, possibly indicating a serious infection. Seek immediate medical care if pain is disabling. (5)
  • High fever with sinus symptoms: Fever over 101°F (38.3°C) accompanying sinus issues may signal a spreading infection. Contact your doctor promptly for evaluation. (5)
  • Vision changes or eye swelling: Blurred vision, double vision, or swelling around eyes may indicate infection spreading to the eye area. This requires urgent medical evaluation. (5)

Causes

Primary causes

  • Persistent sinus inflammation: Long-term swelling and irritation of sinus linings, often from repeated infections or ongoing immune responses. (1) (4)
  • Nasal polyps: Small benign growths in nasal passages or sinuses that block drainage and cause chronic inflammation. (4)
  • Deviated nasal septum: When the wall between nostrils is crooked, restricting sinus drainage on one or both sides. (4)
  • Allergies or environmental irritants: Chronic exposure to allergens like pollen or irritants like smoke keeps sinuses inflamed. (1)

Risk factors

Allergic conditions

People with allergies, asthma, or eczema have higher risk due to chronic inflammation. (4)

Recurrent acute sinusitis

Having several acute sinus infections per year increases risk for developing chronic form. (4) (7)

Smoking or air pollution exposure

Irritants damage sinus linings and impair protective mucus clearance. (7)

Structural nasal abnormalities

Deviated septum, narrow sinus openings, or nasal polyps physically block proper drainage. (4)

Diagnosis

To diagnose chronic sinusitis, doctors review symptoms lasting 12+ weeks. They examine nasal passages and may use a nasal endoscope to view sinus openings. Imaging like CT scans helps visualize sinus inflammation. Allergy testing might identify contributing factors. It's important to rule out other conditions causing similar symptoms.

Nasal endoscopy

A thin flexible tube with light helps doctors directly examine your nasal passages and sinus openings. (8) (5)

CT scan of sinuses

Detailed imaging shows the extent of inflammation and identifies physical blockages. (8) (5)

Allergy testing

Identifies allergic triggers that could be contributing to chronic inflammation. (5)

Treatment

Medication options

Nasal corticosteroids

Sprays reduce inflammation in nasal passages and sinuses. They're first-line treatment for chronic sinusitis. (6) (8)

Saline nasal irrigation

Saltwater rinses flush out mucus and allergens while moisturizing nasal passages. (6) (3)

Oral or injected corticosteroids

For severe inflammation, these steroids provide short-term systemic relief. (8)

Lifestyle and self-care

  • Humidify the air: Use a clean humidifier, especially in dry climates or heated rooms, to keep nasal passages moist. (4) (6)
  • Stay hydrated: Drink plenty of fluids to thin mucus secretions and promote drainage. (4) (7)
  • Avoid irritants: Reduce exposure to cigarette smoke, strong perfumes, and environmental pollutants that worsen symptoms. (7)

Always discuss dosing and treatment changes with your own prescriber.

Possible complications

  • Recurrent acute sinus infections: Chronic inflammation makes sinuses more vulnerable to repeated bacterial infections. (5)
  • Vision problems: Rarely, infection can spread to the eye socket, causing vision loss or permanent double vision. (5)

When to see a doctor

Routine follow-up

  • Schedule an appointment if sinus symptoms last more than 10 days or return frequently throughout the year. (2)
  • See an ENT specialist if you've tried multiple treatments without lasting improvement. (5)

Seek emergency care

  • Seek emergency care for sudden vision changes, severe headache with fever, or swelling around eyes. (5)

Frequently asked questions

What is the difference between acute and chronic sinusitis?

Acute sinusitis is temporary, usually lasting less than 4 weeks after a cold or viral illness. Chronic sinusitis persists for 12 weeks or longer and requires different treatment approaches focused on controlling inflammation. (2) (4)

Can chronic sinusitis be cured?

While there's no guaranteed cure, symptoms can often be well managed with proper treatment. Many people find lasting relief through medications, lifestyle changes, or—when needed—surgery to improve sinus drainage. (4)

What are the best treatments for chronic sinusitis?

Nasal steroid sprays and saline rinses are foundation treatments. Antibiotics help only when bacterial infection is confirmed. Allergy management and sometimes surgery are options for persistent cases. Your doctor can recommend the right plan for your situation. (6) (8)

References

  1. CDC — Sinusitis source 1
  2. NHS — Sinusitis (sinus infection) source 2
  3. MedlinePlus — Sinusitis source 3
  4. Mayo Clinic — Chronic sinusitis source 4
  5. Cleveland Clinic — Chronic Sinusitis source 5
  6. NHS — Sinusitis - Treatment source 6
  7. CDC — Common Colds: Protect Yourself and Others source 7
  8. Mayo Clinic — Chronic sinusitis - Diagnosis & treatment source 8