sudden sinus

Overview

Sudden sinus symptoms — sometimes called acute sinusitis — happen when the lining of your sinuses (the hollow spaces around your nose, cheeks, and eyes) becomes swollen and inflamed. This swelling can block the normal flow of mucus and cause pain, pressure, or a stuffy nose. It often starts quickly after a cold or an allergy flare-up and usually clears up within a few weeks.

Yes. Acute sinusitis is very common. Most adults in the UK and worldwide have at least one episode in their lifetime. It is one of the most frequent reasons people visit their GP.

It can affect anyone, but it is more common in adults than in young children. People with allergies, asthma, a weakened immune system, or a structural issue in the nose (like a deviated septum) are more likely to get sinusitis.

Symptoms

Common symptoms

• Stuffy or blocked nose, which can make it hard to breathe through your nose
• Pain or pressure in your forehead, cheeks, around the eyes, or behind the nose
• Thick, yellow, or green nasal discharge
• Mucus dripping down the back of the throat (postnasal drip)
• A reduced sense of smell or taste
• A cough or a feeling of mucus in the throat
• Mild headache, toothache, or earache
• Low-grade fever, feeling tired or unwell

Symptoms in children

• A blocked or runny nose
• Irritability, fussiness, or crying more than usual
• Difficulty feeding or eating because of nasal congestion
• Breathing through the mouth, especially at night
• A cough or noisy breathing during sleep
• Less energy and more tired than usual

Symptoms in older adults

• Facial pain or pressure may be less obvious
• Confusion or a sudden change in behavior can sometimes be the main sign of a serious sinus infection
• A persistent cough or increased tiredness may be mistaken for other health problems
• Fever may be absent or low
• New or worsening headache, especially with dizziness, should be checked quickly

Causes

Main causes

• Viral infections, such as the common cold or flu, which cause the sinus lining to swell
• Bacterial infection, which can happen if mucus stays trapped in the sinuses for a long time
• Allergies, like hay fever, which can make the sinuses inflamed and blocked
• A dental infection or a tooth root abscess that spreads to the sinus above the upper teeth

Risk factors

• Having a cold or recent upper respiratory infection
• Allergic rhinitis or nasal allergies
• Smoking or breathing in secondhand smoke
• A weakened immune system, for example from diabetes or certain medications
• Nasal polyps or a deviated septum (a shifted wall inside the nose)
• Frequent swimming or diving, which can irritate nasal passages
• Upper dental work or tooth infection

When to see a doctor

See a doctor urgently if:

• You have eye swelling, redness, severe headache, or changes in your vision
• You feel confused, very drowsy, or have a stiff neck
• You have a high fever, especially with a severe headache
• Your symptoms are getting suddenly worse after several days

Book a routine appointment if:

• Your symptoms last more than 10 days or come back after starting to improve
• You have had several episodes of sinusitis in the past year
• Simple self-care measures are not helping
• You have a health condition that makes you more vulnerable to complications, such as asthma or a weakened immune system

Diagnosis

A healthcare provider will usually diagnose sudden sinusitis by asking about your symptoms and examining your nose, throat, and face. They may gently press on certain areas of your face to check for tenderness. In most cases, no tests are needed.

Tests that may be done

• A nasal endoscopy — a thin, flexible tube with a small camera is placed in your nose to look directly at your sinus openings
• Imaging tests, such as a CT scan, if your provider suspects a complication or if sinusitis keeps recurring
• A sample of your nasal discharge can be tested in rare or severe cases to identify the germ causing the infection
• Allergy testing is sometimes suggested if allergies are thought to be the underlying cause

What to expect at your appointment

The visit is usually brief and painless. Your provider will explain what you can do at home and advise whether you need any follow-up. If your symptoms are severe or persistent, they may refer you to an ear, nose, and throat (ENT) specialist for a more detailed assessment.

Treatment

Treatment for sudden sinusitis focuses on relieving symptoms and helping your sinuses drain. If the cause is a virus, it will usually clear up on its own. Antibiotics are only used for bacterial infections, and only when symptoms are severe, last longer than 10 days, or become worse after initial improvement.

Self-care at home

• Rest and get enough sleep to help your body recover
• Drink plenty of fluids, such as water, warm tea, or clear broth, to keep mucus thin
• Use a saline nasal spray or rinse to moisturize and clear your nasal passages
• Place a warm, damp cloth over your forehead and cheeks to ease pain and pressure
• Breathe in steam from a bowl of warm water or a warm shower, but be careful to avoid burns
• Prop your head up with an extra pillow at night to help your sinuses drain
• Avoid smoking and secondhand smoke, and limit alcohol and caffeine
• Use simple pain relievers like paracetamol or ibuprofen if needed — check the instructions and ask your pharmacist if unsure

Medical treatments

Your healthcare provider may recommend over-the-counter options such as pain relievers, saline sprays, or in some cases a short course of nasal corticosteroid spray (a spray that reduces inflammation). If your doctor suspects a bacterial infection, they may prescribe a course of antibiotics. They might also suggest allergy medicines if allergies are triggering your sinusitis. Always take medicines exactly as directed and ask your pharmacist or GP if you have any questions.

When is surgery considered?

Surgery is rarely needed for sudden sinusitis. It is usually only considered if the infection does not clear with medicine, if you have a structural problem blocking your sinuses, or if complications develop. An ENT surgeon may help improve drainage from your sinuses, but surgery is a last resort.

Living with this condition

Give yourself time to rest. Keep your nasal passages moist and gently clear them with saline sprays or rinses. Use a warm compress on your face to ease pressure. Try to sleep with your head raised and avoid strenuous activity until you feel better. Most people feel much better within a week or so.

Lifestyle tips

• Use a humidifier at home, especially in winter, to add moisture to the air
• Keep your home smoke-free and avoid strong chemical fumes or air pollution
• Manage allergies with simple steps like keeping windows closed during pollen season
• Wash your hands regularly to reduce the chance of catching colds or the flu
• Avoid swimming in heavily chlorinated pools if the chlorine seems to irritate your nose

Diet and exercise

Eat a balanced diet when you feel up to it. Warm soups and broths can be soothing. Drink plenty of water to keep mucus thin. Once your fever and severe symptoms have gone, gentle walking or stretching can help you feel better, but avoid intense exercise until you are well. Listen to your body and rest when you need to.

Mental health and emotional wellbeing

Constant pain, pressure, and a stuffy nose can disrupt your sleep, lower your energy, and make you feel irritable or low. It is normal to feel a bit down when you are unwell. Be kind to yourself and take breaks when needed. If symptoms go on for weeks or keep returning, talk to your healthcare provider — there are treatments that can help you feel better.

Prevention

You cannot always prevent sudden sinusitis, but you can lower your risk. Try to avoid colds and trigger factors, manage allergies, keep your hands clean, and do not smoke. Use a saline wash after exposure to dust or air pollution if it helps you.

Vaccines

Ask your healthcare provider about vaccinations that protect against respiratory infections, such as the flu vaccine. For some people, the pneumonia vaccine may also be recommended. Vaccines help reduce the chance of infections that can lead to sinusitis.

Screening programmes

There is no routine screening test for sudden sinusitis in healthy people. If you get frequent or severe sinus infections, your doctor may recommend tests to find an underlying cause, such as allergies or a structural problem in the nose.

Complications

If left untreated

• The infection can spread to the lining of the eye or the brain, which is rare but serious
• A pocket of infection (abscess) may form in the sinus or eye socket
• A chronic sinus infection can develop, with symptoms lasting more than 12 weeks
• Nasal polyps can sometimes form after repeated infections, although this is less common with a single sudden episode

Long-term outlook

The outlook for sudden sinusitis is very good. Most people start feeling better within a week, and the condition goes away completely in 2 to 3 weeks. Even when antibiotics are needed, the vast majority recover fully. Serious complications are very rare, especially if you follow the advice of your healthcare provider and seek help when symptoms are severe or prolonged.

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