Psoriasis does appear to increase the likelihood of sinus problems, though the connection is indirect rather than straightforward. People with psoriasis have higher rates of chronic rhinosinusitis and allergic rhinitis than the general population, with roughly 22% of psoriasis patients experiencing allergic rhinitis. The relationship involves shared inflammatory pathways, the immune-suppressing effects of psoriasis medications, and in rare cases, psoriasis-like changes on the nasal lining itself.
Why Psoriasis and Sinus Problems Overlap
Psoriasis is driven by an overactive immune system that creates a self-reinforcing loop of inflammation. Immune cells in the skin release signaling molecules that activate surface cells, which in turn recruit more immune cells and produce more inflammatory signals. This cycle is largely powered by a specific inflammatory pathway involving proteins called IL-17 and IL-23. The same pathway operates in mucosal tissues, including the lining of the sinuses.
Because psoriasis reflects a system-wide tendency toward excessive inflammation rather than a purely skin-level problem, it tracks with higher rates of many inflammatory conditions. Research published in Nature found that about 22% of psoriasis patients had allergic rhinitis. For people with moderate to severe psoriasis, the trend was even more pronounced, with an odds ratio of 1.41 compared to people without psoriasis. Chronic rhinosinusitis also appears at higher rates in psoriasis patients, though interestingly, the sinus inflammation doesn’t seem to follow the exact same immune pattern as the skin disease. A 2024 study found that even though psoriasis patients develop chronic rhinosinusitis more often, the sinus inflammation follows a different immunological signature than what’s seen in psoriatic skin lesions.
In practical terms, this means your psoriasis isn’t directly “causing” your sinus problems the way a cold virus causes a stuffy nose. Instead, the same underlying immune dysfunction that produces psoriasis also makes your sinuses more prone to chronic inflammation.
Psoriasis Medications and Sinus Infections
If you’re taking biologic medications for psoriasis, your sinus problems may be a side effect of treatment rather than a consequence of the disease itself. Biologics that target the IL-17 pathway are among the most effective treatments for psoriasis, but they work by dialing down part of your immune response. That trade-off comes with a cost: upper respiratory infections are the single most common side effect category.
A systematic review of anti-IL-17 biologics found that infections accounted for about 33% of all adverse events, with nasopharyngitis (inflammation of the nose and throat) being the most frequently reported at nearly 14%. Sinusitis specifically occurred in 3 to 6% of patients on these medications. These numbers aren’t alarming on their own, but they’re worth knowing if you’ve noticed that sinus congestion, pressure, or infections started or worsened after beginning a biologic.
The pattern makes biological sense. IL-17 plays a real role in defending mucosal surfaces against bacteria and fungi. When you suppress it to control psoriasis, the sinuses lose some of that protection, making infections more likely to take hold.
Psoriasis Inside the Nose
In extremely rare cases, psoriasis-like skin changes can develop directly on the nasal mucosa, the moist tissue lining the inside of your nose. This has been documented primarily as a paradoxical reaction to certain biologic medications, particularly TNF-alpha inhibitors. One reported case involved a woman with no personal or family history of psoriasis who developed a scaly, cracked, crusting rash inside the nasal vestibule (the area just inside the nostrils) after treatment with a biologic for inflammatory bowel disease.
Mucosal psoriasis of any kind is exceptionally uncommon. A literature review identified only 64 total cases of psoriasis-like lesions affecting mucosal surfaces, and most of those involved the mouth rather than the nose. Still, if you’re on a biologic and develop persistent crusting, scaling, or deep cracks inside your nostrils that don’t respond to typical treatments, this is worth raising with your dermatologist.
How to Tell What’s Causing Your Symptoms
The challenge for psoriasis patients with sinus issues is sorting out the source. Your congestion, facial pressure, or recurring infections could stem from your overactive immune system, your medication, seasonal allergies that happen to coexist with psoriasis, or something unrelated entirely. A few patterns can help narrow it down.
- Symptoms that started with a new medication: If your sinus problems began or clearly worsened within weeks to months of starting a biologic, the medication is a likely contributor. Nasopharyngitis and sinusitis are well-documented side effects, and the timing usually makes the connection obvious.
- Chronic congestion without clear infection: Persistent stuffiness, postnasal drip, or facial pressure without fever or colored discharge may reflect the same type of low-grade mucosal inflammation that drives psoriasis. This pattern is more consistent with chronic rhinosinusitis related to immune dysfunction.
- Seasonal or trigger-based symptoms: Sneezing, itchy nose, and watery eyes that follow pollen counts or dust exposure point toward allergic rhinitis, which is more common in psoriasis patients but is managed the same way regardless of whether you have psoriasis.
- Crusting or scaling inside the nostrils: This is unusual and suggests either nasal psoriasis (very rare) or a paradoxical drug reaction, particularly if you’re on a biologic.
Managing Sinus Problems With Psoriasis
For everyday sinus congestion and mild infections, standard approaches work fine for most psoriasis patients. Saline nasal rinses, steam inhalation, and staying hydrated all help thin mucus and reduce pressure without interacting with psoriasis treatments. Over-the-counter nasal steroid sprays are generally safe alongside psoriasis medications and can help with both allergic rhinitis and chronic sinus inflammation.
The more complex situation arises when sinus infections become frequent or severe. Because many psoriasis treatments suppress parts of the immune system, recurring sinus infections can signal that your immune defenses are too low. This doesn’t necessarily mean stopping your psoriasis treatment. Adjusting the dose, switching to a biologic that targets a different pathway, or adding preventive sinus care may be enough. The key is making sure both your dermatologist and your primary care provider (or an ENT specialist) are aware of the full picture, since sinus problems in an immunosuppressed patient sometimes need more aggressive treatment than they would otherwise.
If you have moderate to severe psoriasis and chronic sinus issues that haven’t responded to typical treatments, it’s worth getting a thorough evaluation. The overlap between these conditions is real, and identifying whether your sinus problems are immune-driven, medication-related, or coincidental changes how they’re best managed.