Common symptoms of chronic sinusitis include:

• Thick, discolored mucus from the nose, known as a runny nose.
• Mucus down the back of the throat, known as postnasal drip.
• Blocked or stuffy nose, known as congestion. This makes it hard to breathe through the nose.
• Pain, tenderness and swelling around the eyes, cheeks, nose or forehead.
• Reduced sense of smell and taste.

Other symptoms can include:

• Ear pain.
• Headache.
• Aching in the teeth.
• Cough.
• Sore throat.
• Bad breath.
• Tiredness.

Chronic sinusitis and acute sinusitis have similar symptoms. But acute sinusitis is a short-lived infection of the sinuses often linked to a cold.

The symptoms of chronic sinusitis last at least 12 weeks. There might be many bouts of acute sinusitis before it becomes chronic sinusitis. Fever isn't common with chronic sinusitis. But fever might be part of acute sinusitis.

When to see a doctor

Schedule an appointment with your health care provider for:

• Repeated sinusitis, and if the condition doesn't get better with treatment.
• Sinusitis symptoms that last more than 10 days.

See a health care provider right away if you have symptoms that could mean a serious infection:

• Fever.
• Swelling or redness around the eyes.
• Bad headache.
• Forehead swelling.
• Confusion.
• Double vision or other vision changes.
• Stiff neck.

The following factors raise the risk of getting chronic sinusitis:

• A dental infection.
• A fungal infection.
• Regularly being around cigarette smoke or other pollutants.

Serious complications of chronic sinusitis are rare. They can include:

• Vision problems. If a sinus infection spreads to an eye socket, it can reduce vision or possibly cause blindness.
• Infections. It's not common. But a serious sinus infection can spread to the membranes and fluid around the brain and spinal cord. The infection is called meningitis. Other serious infections can spread to the bones, called osteomyelitis, or to skin, called cellulitis.

Take these steps to lower the risk of getting chronic sinusitis:

• Protect your health. Try to stay away from people who have colds or other infections. Wash your hands often with soap and water, especially before meals.
• Manage allergies. Work with your health care provider to keep symptoms under control. Stay away from things you're allergic to when possible.
• Avoid cigarette smoke and polluted air. Tobacco smoke and other pollutants can irritate the lungs and inside the nose, called the nasal passages.
• Use a humidifier. If the air in your home is dry, adding moisture to the air with a humidifier may help prevent sinusitis. Be sure the humidifier stays clean and free of mold with regular, complete cleaning.

A health care provider might ask about symptoms and do an exam. The exam might include feeling for tenderness in the nose and face and looking inside the nose.

Other ways to diagnose chronic sinusitis and rule out other conditions include:

• Nasal endoscopy. A health care provider inserts a thin, flexible tube, known as an endoscope, into the nose. A light on the tube allows a care provider to see inside the sinuses.
• Imaging tests. CT or MRI scans can show details of the sinuses and nasal area. These images might pinpoint the cause of chronic sinusitis.
• Nasal and sinus samples. Lab tests aren't often used to diagnose chronic sinusitis. But, if the condition doesn't get better with treatment or gets worse, tissue samples from the nose or sinuses might help find the cause.
• An allergy test. If allergies might be causing chronic sinusitis, an allergy skin test might show the cause.

You'll likely see your primary care provider for symptoms of sinusitis. If you've had many bouts of acute sinusitis or you have symptoms of chronic sinusitis, your provider might refer you to an allergist or an ear, nose and throat specialist.

Here's information to help you get ready for your appointment.

What you can do

Make a list of:

• Your symptoms, including any that seem unrelated to the reason for your appointment, and when they began.
• Key personal information, including whether you have allergies or asthma, and family medical history.
• All medicines, vitamins or other supplements you take, including doses.
• Questions to ask your health care provider.

For chronic sinusitis, questions to ask your provider include:

• What's the most likely cause of my symptoms?
• What tests do I need?
• Is my condition likely to go away or be long lasting?
• What treatments do you suggest for me?
• I have these other health conditions. How can I best manage these conditions together?
• Should I see a specialist?
• Are there brochures or other printed material I can have? What websites do you suggest?

Be sure to ask all the questions you have.

What to expect from your doctor

Your care provider is likely to ask you questions, such as:

• Do you have symptoms all the time or sometimes?
• How bad are your symptoms?
• What, if anything, seems to make your symptoms better?
• What, if anything, appears to make your symptoms worse?
• Do you smoke or are you around smoke or other pollutants?