Most sinus infections are viral and clear up on their own within 7 to 10 days with symptom management at home. When a bacterial infection is suspected, antibiotics become part of the picture, but the majority of treatment centers on relieving congestion, pain, and pressure while your body fights off the infection. Here’s what that looks like in practice.
How Doctors Tell If It’s Bacterial
The first thing a provider does is figure out whether your sinus infection is viral or bacterial, because that determines whether you need antibiotics. Most sinus infections start as viral, often following a cold. A bacterial infection is suspected when your symptoms last at least 10 days without improvement, or when you start to get better and then suddenly worsen. That second pattern, sometimes called “double sickening,” is one of the strongest clues.
Doctors also look for a combination of specific signs: thick, discolored discharge (especially from one side), significant facial pain concentrated on one side, and fever above 100.4°F. You won’t typically need imaging or lab tests for a straightforward sinus infection. The diagnosis is clinical, meaning your provider makes the call based on your symptoms and how long you’ve had them.
Symptom Relief That Actually Helps
Whether your infection is viral or bacterial, the goal is the same: get your sinuses draining and manage the pain. Several over-the-counter options can help.
Decongestants work by shrinking swollen blood vessels in your nasal passages, which opens up the airway and lets mucus drain. They come as pills, liquids, and nasal sprays. If you use a decongestant spray, limit it to three days. Longer use can cause rebound congestion that makes things worse.
Pain relievers like acetaminophen (Tylenol) or ibuprofen (Advil, Motrin) help with the facial pressure and headache that come with a sinus infection. Ibuprofen also reduces inflammation, which can be especially useful when your sinuses are swollen shut.
Saline nasal rinses are one of the most effective home treatments. Research from NIHR found that flushing your nose with salt water provides a small but meaningful improvement in symptoms, and that benefit holds up at both three and six months. You can use a squeeze bottle or a neti pot. The key safety rule: never use plain tap water. Use distilled water, sterile water, or water you’ve boiled for 3 to 5 minutes and cooled. Tap water can contain organisms that are harmless in your stomach but dangerous in your nasal passages. After each use, wash the device and let it air dry or dry the inside with a paper towel.
To rinse properly, lean over a sink and tilt your head sideways, keeping your forehead and chin roughly level. Breathe through your mouth, insert the spout into your upper nostril, and let the solution drain out the lower nostril. Repeat on the other side.
Steam inhalation is popular but the evidence is disappointing. Multiple reviews have found that breathing in steam over a bowl of hot water has minimal effect on sinus symptoms compared to doing nothing. It may feel soothing in the moment, but it doesn’t meaningfully speed recovery. Drinking extra fluids is more useful for thinning mucus and supporting drainage.
When Antibiotics Are Prescribed
If your provider determines you have a bacterial sinus infection, antibiotics are the standard treatment. The first-line choice for non-severe cases is amoxicillin. For more severe symptoms, a combination of amoxicillin and clavulanate (Augmentin) is typically used. Treatment usually lasts 10 days.
If you have a penicillin allergy, your provider will choose an alternative based on how severe your allergy is. One thing worth knowing: azithromycin (the common “Z-pack”) is not recommended for sinus infections. It’s frequently requested, but guidelines advise against it for this specific use.
Many people expect antibiotics for any sinus infection, but prescribing them for viral cases doesn’t help and contributes to antibiotic resistance. If your provider recommends waiting and managing symptoms, that’s the evidence-based approach for infections that haven’t crossed the 10-day threshold or shown signs of bacterial involvement.
Nasal Steroid Sprays
Corticosteroid nasal sprays reduce the swelling inside your sinuses, decrease mucus production, and help your sinuses drain. For acute infections, your provider may recommend a spray like fluticasone (Flonase) or budesonide (Rhinocort), many of which are available without a prescription. These aren’t the same as decongestant sprays and don’t cause rebound congestion, so they’re safe for longer use.
For chronic or allergy-driven sinusitis, guidelines suggest using nasal corticosteroids for up to three months as a first-line treatment. They work best with consistent daily use rather than occasional spraying when symptoms flare.
What Happens With Chronic Sinusitis
If your sinus infections keep coming back or your symptoms last longer than 12 weeks, you’re dealing with chronic sinusitis, and the treatment approach shifts. Your provider will likely investigate underlying causes, particularly allergies. A skin prick test can identify specific allergens driving the inflammation, and allergy medications or immunotherapy (allergy shots) may become part of your long-term plan.
Chronic sinusitis treatment relies heavily on the combination of daily saline rinses and nasal corticosteroid sprays. For people with nasal polyps, which are noncancerous growths that block the sinuses, stronger options come into play. These include short courses of oral corticosteroid pills, or injectable medications that shrink polyps and reduce congestion. Antibiotics may also be used for chronic cases when a bacterial component is identified, though they’re not the centerpiece of treatment the way they are for acute bacterial infections.
When medications aren’t enough, endoscopic sinus surgery can widen the natural drainage pathways of your sinuses. The procedure is done through your nostrils with a small camera, so there are no external incisions. Recovery typically takes a week or two, and you’ll use saline rinses and possibly steroid sprays afterward to keep the opened passages clear.
Symptoms That Need Immediate Attention
Sinus infections rarely become dangerous, but the sinuses sit close to your eyes and brain, so infections can occasionally spread. Get medical attention right away if you develop swelling or redness around your eyes, double vision or other vision changes, a high fever, a stiff neck, or confusion. These can signal that the infection has moved beyond the sinuses and needs urgent treatment.