A sinus infection headache typically lasts 7 to 10 days when caused by a virus, which accounts for the vast majority of cases. Bacterial sinus infections can push that timeline to 10 days or longer, and chronic sinusitis can cause recurring or persistent head pain for 12 weeks or more. How long yours lasts depends largely on what’s causing the infection and how your body responds to it.
Viral vs. Bacterial: Two Different Timelines
Most sinus infections start as viral infections, often following a cold. With a viral sinus infection, you can expect symptoms to start improving after five to seven days. The headache and facial pressure usually follow the same arc, peaking around days three through five and then gradually fading.
A bacterial sinus infection behaves differently. Symptoms persist for seven to 10 days or longer and may actually worsen after the seven-day mark. This pattern has a name in clinical practice: “double worsening.” Your headache and congestion seem to be getting better, then they come back stronger. That reversal is one of the clearest signs that bacteria have taken hold and your body may need help clearing the infection. Antibiotics are generally considered appropriate when symptoms have lasted 10 or more days without improvement, or when that double worsening pattern appears.
Why Sinus Infections Cause Head Pain
The pain comes from a pressure buildup inside the hollow spaces behind your forehead, cheeks, and eyes. When you get a sinus infection, your sinuses ramp up mucus production. That extra mucus creates a breeding ground for viruses or bacteria, which causes the sinus lining to swell. The swelling traps mucus so it can’t drain, and the result is swollen, fluid-filled cavities pressing against the surrounding bone and tissue. That’s the aching, tender feeling across your face and forehead.
The headache tends to feel worst in the morning because mucus pools overnight while you’re lying flat. Bending forward or looking down often intensifies the pressure. Unlike other headaches, sinus pain is usually localized to specific areas: around the eyes, behind the cheekbones, across the forehead, or in the upper teeth.
When It Becomes Chronic
If your sinus headache and related symptoms stretch beyond 12 weeks, you’re dealing with chronic sinusitis. This is a different condition from an acute infection. Chronic sinusitis involves long-lasting inflammation in the sinuses that may or may not involve an active infection. People with nasal polyps, a deviated septum, allergies, or a history of smoking are more likely to develop chronic sinusitis because these conditions make it harder for the sinuses to drain properly in the first place.
Chronic sinusitis doesn’t always cause the intense pressure of an acute infection. Instead, you may notice a persistent dull ache, ongoing congestion, and a reduced sense of smell that doesn’t fully go away. Treatment at this stage often involves longer courses of medication or, in some cases, a procedure to improve sinus drainage.
It Might Not Be a Sinus Headache at All
This is worth knowing: about 90% of people who think they have a sinus headache actually have a migraine. A study of nearly 3,000 people who reported frequent “sinus headaches” found that 88% of them met the criteria for migraine, not sinusitis. The confusion happens because migraines can cause nasal congestion, a runny nose, and facial pressure, symptoms most people associate with their sinuses.
A few features help tell them apart. A true sinus headache comes with thick, discolored nasal discharge (yellow or green), a reduced sense of smell, and sometimes a fever. A migraine is more likely to involve throbbing or pulsating pain, nausea, sensitivity to light or sound, and pain that gets worse with physical activity. If your “sinus headaches” keep coming back every few weeks but never produce discolored mucus or other signs of infection, migraine is the more likely explanation.
Relieving the Pain While You Wait It Out
Since most sinus infections are viral and resolve on their own, the goal during that 7 to 10 day window is managing the pressure and pain. Warm compresses across your face can ease the aching. Saline nasal rinses help flush out mucus and reduce swelling. Staying well hydrated thins mucus, making it easier for your sinuses to drain. Sleeping with your head slightly elevated prevents mucus from pooling overnight, which can take the edge off those painful mornings.
Over-the-counter decongestant nasal sprays can provide quick relief, but limit use to three consecutive days. Beyond that, you risk rebound congestion, where the spray itself causes your nasal passages to swell, trapping you in a cycle of worsening symptoms. Oral pain relievers can help with the headache itself while you wait for the underlying infection to clear.
Signs Your Sinus Infection Needs Medical Attention
The CDC recommends seeing a healthcare provider if your symptoms last more than 10 days without improving. Other signals that something more serious may be going on include a high fever (above 102°F), severe pain or swelling around one eye, swelling of the forehead, a stiff neck, or confusion. These can indicate the infection is spreading beyond the sinuses, which is rare but requires prompt treatment. A sudden worsening after initial improvement, that double worsening pattern, is also a reason to get evaluated, since it typically points to a bacterial infection that will respond to antibiotics.