sinus infection risks and benefits for patients

Overview

A sinus infection, also called sinusitis, happens when the tissue lining the sinuses — the small, air-filled spaces behind your forehead, nose, and eyes — becomes swollen or inflamed. This can block the sinuses and trap mucus, leading to pain and pressure. Most sinus infections are caused by viruses, not bacteria, and often get better on their own with rest and home care.

Yes. Sinus infections are extremely common. Many people get one after a cold, and most recover within a week or two.

Sinus infections can affect anyone at any age. You may be more likely to get them if you have allergies, a weak immune system, a deviated septum, or if you smoke.

Symptoms

Common symptoms

• Stuffy or runny nose with thick mucus
• Pain, pressure, or a feeling of fullness in the face, forehead, or around the eyes
• Headache
• Cough, especially at night
• Reduced sense of smell and taste
• Bad breath
• Mild fever or tiredness

Symptoms in children

• A runny nose that lasts longer than a typical cold
• Cough during the day or at night
• Irritability or fussiness
• Tiredness or low energy
• Sometimes a fever or pain around the cheekbones

Symptoms in older adults

• Less obvious symptoms, such as fatigue or confusion, instead of typical facial pain
• A lingering cough or congestion that is slow to clear
• A fever may be absent or very mild

Causes

Main causes

• Viral infections, such as the common cold
• Bacterial infection, which can happen after a viral sinus infection
• Allergies that inflame the nasal passages
• Nasal polyps (small growths in the nose) or a deviated septum (a shifted nasal bone)
• A dental infection that spreads to the sinuses

Risk factors

• A recent cold or upper respiratory infection
• Allergic rhinitis (hay fever)
• Smoking or exposure to secondhand smoke
• A weakened immune system due to chronic illness or certain medications
• Structural issues in the nose or sinuses
• Frequent swimming, flying, or changes in air pressure

When to see a doctor

See a doctor urgently if:

• Your symptoms are severe, such as a very high fever or intense facial pain
• You have swelling or redness around the eye, or a severe headache with a stiff neck
• You are having trouble breathing

Book a routine appointment if:

• Your symptoms last longer than 10 days without getting better
• Your symptoms seem to improve, then get worse again (double sickening)
• You have had more than three or four sinus infections in a year

Diagnosis

Your doctor will usually diagnose a sinus infection by talking to you about your symptoms and checking your face and nose. They may press gently on your cheeks and forehead to look for pain and tenderness.

Tests that may be done

• Most people need no tests at all.
• If your doctor wants a closer look, they may use a small camera (nasal endoscopy) or order a CT scan of your sinuses.
• In some cases, a swab of nasal fluid may be sent to a lab to check for bacteria or other causes.

What to expect at your appointment

During the visit, your doctor will ask how long you’ve had symptoms, whether you’ve had a cold, and if you have allergies or other conditions. They will examine you and recommend self-care or further treatment, such as a prescription nasal wash or, if needed, antibiotics.

Treatment

Treatment for sinus infection focuses on easing symptoms and helping your sinuses drain. For most viral sinus infections, the body fights off the virus on its own. Antibiotics are only useful if a bacterial infection is likely, and your doctor will decide this based on your symptoms. Avoid requesting antibiotics for a viral infection, as they won’t help and may cause side effects.

Self-care at home

• Rest and drink plenty of fluids to thin mucus
• Use a saline (saltwater) nasal spray or rinse to keep your nasal passages moist
• Apply a warm, damp towel over your face to ease pain and pressure
• Use a cool-mist humidifier in your room to add moisture to the air
• Breathe steam from a warm shower or bowl (carefully to avoid burns)

Medical treatments

If your doctor thinks a bacterial infection is present, they may prescribe a course of antibiotics. They may also recommend a nasal corticosteroid spray to reduce inflammation. Pain relievers such as paracetamol or ibuprofen can be used for discomfort, but always follow the instructions on the label or your doctor’s advice.

When is surgery considered?

Surgery is rarely needed. It may be considered if you have very frequent or severe sinus infections due to a structural problem, nasal polyps that do not improve with medication, or if the infection spreads to nearby areas.

Living with this condition

While you have a sinus infection, take it easy and let your body recover. Drink fluids, get enough rest, and avoid irritants like smoke. If symptoms are mild, you can continue your normal daily tasks, but don’t push yourself.

Lifestyle tips

• If you smoke, seek support to quit (smoking makes sinus problems worse)
• Limit exposure to allergens like dust, pollen, and pet dander
• Use a humidifier during dry months or in air-conditioned rooms
• Wash your hands often to reduce the risk of new infections

Diet and exercise

Stay well hydrated with water, soup, and warm tea. Eat a balanced diet rich in fruits and vegetables to support your immune system. Light exercise, like walking, is fine if you feel up to it, but avoid intense workouts until your symptoms ease.

Mental health and emotional wellbeing

Dealing with a stubborn or chronic sinus infection can be frustrating and tiring. It may affect your sleep, mood, and ability to focus. It’s normal to feel low; talk to friends or family, practice relaxation techniques, and speak to your healthcare provider if you are struggling.

Prevention

You can’t prevent every sinus infection, but you can lower your risk by washing your hands often, not smoking, managing allergies well, and staying away from people who are sick with a cold. Keeping your sinuses healthy with good habits also helps.

Vaccines

Some vaccines, like the flu vaccine and pneumococcal vaccine, can reduce the number of respiratory infections that sometimes lead to sinusitis. Talk to your doctor or pharmacist about which vaccines are recommended for you.

Screening programmes

Routine screening for sinus infections is not recommended. Most people don’t need any special tests unless they have recurring or serious problems.

Complications

If left untreated

• Rarely, a bacterial sinus infection can spread to the bones, eyes, or brain, causing serious problems like orbital cellulitis or an abscess.
• Very rarely, a blood clot may form near the sinuses.
• Chronic sinusitis can impair your quality of life but is not usually dangerous.

Long-term outlook

The outlook for most people with sinus infection is excellent. With simple self-care and medical support when needed, the vast majority improves within a few weeks. Even recurring sinus problems can often be managed well with proper treatment and lifestyle changes.

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