Yes, COVID-19 frequently causes sinus symptoms including nasal congestion, runny nose, and sinus pressure. With newer variants, these symptoms have become even more common. During the Omicron BA.2 wave, roughly 60% of patients reported a runny nose, and during the Gamma wave, nasal congestion appeared in about 64% of cases. For many people today, a COVID infection feels a lot like a sinus cold.
Which Sinus Symptoms COVID Causes
The sinus-related symptoms most commonly reported with COVID-19 overlap heavily with what you’d feel during a regular cold or sinus infection. Nasal congestion, runny nose, postnasal drip, and a feeling of pressure around the forehead or cheeks are all well-documented. Sore throat, which often accompanies sinus drainage, is also extremely common, appearing in about 60–65% of patients across recent variant waves.
The pattern has shifted over the course of the pandemic. Earlier strains were more associated with fever, body aches, and loss of taste or smell. The Omicron variants and their sublineages tilted the symptom profile toward upper respiratory and sinus complaints, making COVID harder to distinguish from an ordinary cold based on symptoms alone. Cough remains the single most common symptom across all variants, reported by roughly 75% of patients.
Why the Virus Targets Your Nose
SARS-CoV-2 has a strong affinity for nasal tissue. The cells lining your nasal passages are packed with a protein the virus uses as its entry point. This protein sits on the surface of support cells in the nasal lining, particularly at the very top of the nasal cavity where your smell receptors live, and also throughout the respiratory portion of your nose. When the virus latches onto these cells and begins replicating, it triggers inflammation, swelling, and excess mucus production, which is exactly the stuffed-up, congested feeling of a sinus problem.
Your immune system responds by flooding the area with inflammatory signals and immune cells. This local inflammation is what produces that heavy, pressurized sensation in your sinuses. It also explains why sinus symptoms can linger for days even after the virus itself is being cleared: the immune response and tissue repair take time to wind down.
Loss of Smell: Not From Congestion
One of COVID’s more distinctive features is losing your sense of smell, and it’s worth knowing this usually isn’t caused by a stuffed nose. Unlike a regular cold where congestion physically blocks odor molecules from reaching your smell receptors, COVID attacks the support cells surrounding your olfactory neurons directly. This means you can lose your sense of smell even when your nose feels perfectly clear.
The initial damage happens when the virus infects these support cells. But the loss of smell can be prolonged by the inflammatory response that follows. Immune signals like certain inflammatory proteins can interfere with the normal regeneration of the smell-detecting tissue, which is why some people experience altered or absent smell for weeks or months. This pattern, losing smell without significant congestion, is a useful clue that your symptoms may be COVID rather than allergies or a standard cold.
COVID Sinus Symptoms vs. Allergies vs. a Cold
The overlap between COVID, allergies, and the common cold can make self-diagnosis tricky, but a few patterns help sort things out:
- Itchy eyes, nose, or ears point strongly toward allergies. COVID and colds rarely cause itchiness.
- Sneezing is a hallmark of allergies and colds but is uncommon with COVID.
- Fever and body aches suggest COVID or the flu, not allergies.
- Loss of smell without congestion is a COVID signature. Allergies and colds can reduce smell, but usually only when your nose is blocked.
- Sore throat with runny nose and cough is common in both COVID and colds, so this combination alone won’t tell you much.
Allergies also tend to follow predictable seasonal patterns and respond quickly to antihistamines. COVID symptoms typically build over a few days and come with fatigue that feels disproportionate to the level of congestion.
How Long Sinus Symptoms Last
For most people, COVID-related sinus symptoms follow a typical cold-like arc. They tend to appear within the first few days of infection, peak around days three to five, and resolve within 5 to 10 days. Some people bounce back in under a week, while others, particularly those who are older or immunocompromised, may deal with congestion and drainage for several weeks.
If your sinus symptoms persist well beyond two weeks or worsen after initially improving, that’s a signal worth paying attention to. A “double worsening” pattern, where you start to feel better and then get worse again, can indicate a secondary bacterial sinus infection developing on top of the viral illness.
When COVID Leads to a Bacterial Sinus Infection
Any viral upper respiratory infection can set the stage for bacterial sinusitis, and COVID is no exception. The inflammation and swelling from the virus can block the normal drainage pathways in your sinuses, creating a warm, stagnant environment where bacteria thrive.
Signs that a bacterial infection may have developed include thick yellow or green nasal discharge, facial pain or pressure that worsens rather than improves after 10 days, and fever returning after it had gone away. People with diabetes, those who took prolonged courses of steroids during their COVID illness, or anyone with a weakened immune system face a higher risk. In rare but serious cases, sinus infections after COVID have progressed to involve the bone of the skull, requiring surgical intervention. These severe outcomes are uncommon but underscore why persistent or worsening symptoms shouldn’t be ignored.
Relieving Sinus Symptoms During COVID
Saline nasal irrigation, the simple act of rinsing your nasal passages with salt water, has solid evidence behind it for COVID-related congestion. In studies of patients with mild to moderate COVID, those who started daily saline rinses shortly after diagnosis experienced significantly more relief from nasal obstruction, postnasal drip, and sneezing compared to those who didn’t rinse. Solutions ranging from normal saline (0.9%) up to mildly hypertonic concentrations (up to 3%) all appear effective, with larger and more frequent rinses providing more benefit.
For best results, continuing the rinses for at least 10 days, and for two to three days after symptoms resolve, seems to be the sweet spot. In cases of moderate illness, rinsing as often as every three hours has been used. A neti pot, squeeze bottle, or similar device all work. Over-the-counter decongestant sprays can also provide short-term relief, though these should be limited to three days of use to avoid rebound congestion. Steam inhalation, staying hydrated, and sleeping with your head slightly elevated are other practical measures that help keep your sinuses draining.