Chronic sinusitis and acute sinusitis have similar signs and symptoms, but acute sinusitis is a temporary infection of the sinuses often associated with a cold. At least two of the following signs and symptoms must be present for a diagnosis of chronic sinusitis:
- Drainage of a thick, yellow or greenish discharge from the nose or down the back of the throat
- Nasal obstruction or congestion, causing difficulty breathing through your nose
- Pain, tenderness and swelling around your eyes, cheeks, nose or forehead
- Reduced sense of smell and taste
Other signs and symptoms can include:
- Ear pain
- Aching in your upper jaw and teeth
- Cough, which may be worse at night
- Sore throat
- Bad breath (halitosis)
- Fatigue or irritability
The signs and symptoms of chronic sinusitis are similar to acute sinusitis, except they last longer and often cause more significant fatigue. Fever isn't a common sign of chronic sinusitis, as it may be with acute sinusitis.
When to see a doctor
You may have several episodes of acute sinusitis, lasting less than four weeks, before developing chronic sinusitis. You may be referred to an allergist or an ear, nose and throat specialist for evaluation and treatment.
Schedule an appointment with your doctor if:
- You've had sinusitis a number of times, and the condition fails to respond to treatment
- You have sinusitis symptoms that last more than seven days
- Your symptoms don't get better after you see your doctor
See a doctor immediately if you have symptoms that may be a sign of a serious infection:
- Pain or swelling around your eyes
- A swollen forehead
- Severe headache
- Double vision or other vision changes
- Stiff neck
- Shortness of breath
Common causes of chronic sinusitis include:
- Nasal polyps. These tissue growths may block the nasal passages or sinuses.
- Allergic reactions. Allergic triggers include fungal infection of the sinuses.
- Deviated nasal septum. A crooked septum — the wall between the nostrils — may restrict or block sinus passages.
- Trauma to the face. A fractured or broken facial bone may cause obstruction of the sinus passages.
- Other medical conditions. The complications of cystic fibrosis, gastroesophageal reflux, or HIV and other immune system-related diseases may result in nasal blockage.
- Respiratory tract infections. Infections in your respiratory tract — most commonly, colds — can inflame and thicken your sinus membranes, block mucus drainage and create conditions ripe for growth of bacteria. These infections can be viral, bacterial or fungal in nature.
- Allergies such as hay fever. Inflammation that occurs with allergies may block your sinuses.
- Immune system cells. With certain health conditions, immune cells called eosinophils can cause sinus inflammation.
You're at increased risk of getting chronic or recurrent sinusitis if you have:
- A nasal passage abnormality, such as a deviated nasal septum or nasal polyps
- Aspirin sensitivity that causes respiratory symptoms
- An immune system disorder, such as HIV/AIDS or cystic fibrosis
- Hay fever or another allergic condition that affects your sinuses
- Asthma — about 1 in 5 people with chronic sinusitis have asthma
- Regular exposure to pollutants such as cigarette smoke
Chronic sinusitis complications include:
- Asthma flare-ups. Chronic sinusitis can trigger an asthma attack.
- Meningitis. This infection causes inflammation of the membranes and fluid surrounding your brain and spinal cord.
- Vision problems. If infection spreads to your eye socket, it can cause reduced vision or even blindness that can be permanent.
- Aneurysms or blood clots. Infection can cause problems in the veins surrounding the sinuses, interfering with blood supply to your brain and putting you at risk of a stroke.
Take these steps to reduce your risk of getting chronic sinusitis:
- Avoid upper respiratory infections. Minimize contact with people who have colds. Wash your hands frequently with soap and water, especially before your meals.
- Carefully manage your allergies. Work with your doctor to keep symptoms under control.
- Avoid cigarette smoke and polluted air. Tobacco smoke and air contaminants can irritate and inflame your lungs and nasal passages.
- Use a humidifier. If the air in your home is dry, such as it is if you have forced hot air heat, adding moisture to the air may help prevent sinusitis. Be sure the humidifier stays clean and free of mold with regular, thorough cleaning.