Most sinus infections are caused by viruses and clear up on their own within 7 to 10 days with simple home care. The main things you can do are manage pain and pressure, keep your sinuses draining, and watch for signs that you might need antibiotics. Only a small percentage of sinus infections are bacterial, so the goal in the first week or so is comfort while your body fights off the virus.
How Long Sinus Infections Last
Sinus infections fall into three categories based on duration. Acute sinusitis lasts up to 4 weeks. Subacute cases drag on from 4 to 12 weeks. Chronic sinusitis persists for 12 weeks or longer and often involves different underlying causes like nasal polyps or allergies.
The vast majority of acute sinus infections start as a common cold. Your nasal passages swell, mucus gets trapped in the sinuses, and the pressure builds into that familiar ache behind your cheeks, eyes, or forehead. This viral phase typically peaks around days 3 to 5, then gradually improves. If it doesn’t, that’s when a bacterial infection becomes more likely.
Relieve Pain and Pressure
Over-the-counter pain relievers work well for the facial pain and headache that come with a sinus infection. Anti-inflammatory options like ibuprofen (Advil, Motrin), naproxen (Aleve), or aspirin tend to offer more relief than acetaminophen (Tylenol) because they reduce the inflammation driving the pressure, not just the pain signal. If anti-inflammatories bother your stomach, acetaminophen is a reasonable alternative.
A warm compress over your forehead and nose can also ease pressure. Some people find that leaning over a bowl of hot water and breathing in the steam loosens things up enough to get temporary relief. Neither replaces medication, but both can help between doses.
Keep Your Sinuses Draining
The core problem in a sinus infection is trapped mucus. Anything that helps it flow out will make you feel better and help your body clear the infection faster.
Saline nasal irrigation is one of the most effective things you can do at home. Using a neti pot, squeeze bottle, or bulb syringe, you flush warm salt water through one nostril and let it drain out the other. This physically washes out mucus, bacteria, and inflammatory debris. One important safety rule: never use plain tap water. Use water labeled “distilled” or “sterile,” or boil tap water at a rolling boil for 1 minute (3 minutes above 6,500 feet elevation) and let it cool before using. Tap water can contain organisms that are harmless to drink but dangerous when introduced directly into your nasal passages.
Nasal steroid sprays like fluticasone (Flonase) are available over the counter and reduce swelling inside the nasal passages, which helps your sinuses drain. They work by calming the inflammatory response in the tissue. Don’t expect instant results; it can take a few days of consistent use before you notice improvement. These sprays are safe to use for the full course of a sinus infection and won’t cause rebound congestion.
Decongestant sprays like oxymetazoline (Afrin) provide fast, powerful relief by shrinking swollen nasal tissue. But you need to stop using them after 3 days. Beyond that, they can cause rebound congestion, a condition where your nasal passages swell up worse than before, creating a cycle of dependency on the spray.
Oral decongestants are another option, but which one matters. Pseudoephedrine (the original Sudafed) works and is available behind the pharmacy counter without a prescription. Phenylephrine, the ingredient in most decongestants sitting on the shelf, has been shown to be no more effective than a placebo when taken as a pill. It does work as a nasal spray, but in oral form it’s essentially useless. If you want an oral decongestant that actually helps, ask the pharmacist for pseudoephedrine.
Stay Hydrated and Humidify Your Air
Drinking plenty of fluids helps thin your mucus, making it easier to drain. Water, tea, and broth all count. Keeping indoor humidity between 30% and 50% also helps. Dry air thickens mucus and irritates already-inflamed nasal tissue, so running a humidifier in your bedroom at night can make a noticeable difference in how you feel each morning. Clean the humidifier regularly to prevent mold growth.
When You Might Need Antibiotics
Because most sinus infections are viral, antibiotics won’t help in the first week of symptoms. Doctors are encouraged to recommend watchful waiting for uncomplicated cases. Antibiotics become appropriate when the pattern of symptoms suggests a bacterial infection has set in. The CDC identifies three scenarios:
- Severe symptoms lasting more than 3 to 4 days: a fever of 102°F (39°C) or higher along with thick, discolored nasal discharge or significant facial pain.
- Persistent symptoms beyond 10 days with no improvement at all, such as ongoing nasal discharge or daytime cough that hasn’t budged.
- Double sickening: you start to feel better after a cold, then get noticeably worse again around days 5 to 6, with new or worsening fever, cough, or nasal discharge.
That “double sickening” pattern is a particularly telling sign. It suggests a virus damaged your sinus lining enough for bacteria to take hold as a secondary infection. If your symptoms fit any of these three patterns, it’s worth contacting your doctor to discuss whether antibiotics make sense.
Symptoms That Need Immediate Attention
Sinus infections rarely become dangerous, but they can spread to nearby structures like the eye socket or the lining of the brain. Get medical attention right away if you develop any of the following: pain, swelling, or redness around the eyes; double vision or other vision changes; a high fever; confusion; or a stiff neck. These can signal complications like orbital cellulitis or meningitis, which require urgent treatment.
Putting It All Together
For the typical sinus infection, the daily routine that provides the most relief looks something like this: flush your sinuses with saline once or twice a day, use a nasal steroid spray consistently, take ibuprofen or naproxen for pain and pressure, drink plenty of fluids, and keep your air humidified. Add pseudoephedrine if congestion is severe, and use a decongestant spray for no more than 3 days if you need fast relief for a particular event like sleeping.
Most people turn the corner within 7 to 10 days. If you’re not improving by day 10, getting worse after initially improving, or running a high fever with severe facial pain, that’s the point where antibiotics enter the conversation.