Your primary care doctor is the right starting point for most sinus issues. They can diagnose and treat sinus infections, nasal congestion, and conditions that mimic sinus problems like allergies or tension headaches. If your symptoms don’t improve or keep coming back, the next step is an ear, nose, and throat specialist (ENT), and in some cases, an allergist.
Start With Your Primary Care Doctor
A primary care physician handles the majority of sinus complaints without needing to send you anywhere else. Acute sinus infections, which last less than four weeks, typically resolve with the treatments your primary care doctor can prescribe. They’ll assess whether your symptoms point to a true sinus infection, seasonal allergies, or something else entirely, like a migraine that causes facial pressure.
If you can’t get in to see your primary care doctor quickly, an urgent care center can step in. Urgent care providers treat sinus issues the same way your primary care doctor would, including prescribing antibiotics when a bacterial infection is likely. This is a good option when your symptoms are worsening and you don’t want to wait days for an appointment.
When to See an ENT Specialist
An ENT (otolaryngologist) is the specialist most equipped to handle sinus problems that don’t respond to initial treatment. Consider seeing one if your symptoms have lasted longer than 12 weeks, which crosses the threshold into chronic sinusitis, or if you’ve had several sinus infections within the same year. ENTs have diagnostic tools your primary care doctor’s office typically doesn’t.
One of the most useful is nasal endoscopy: a slim, flexible tube with a light on the end that lets the doctor look directly inside your nasal passages and sinus openings. It’s done in the office, takes only a few minutes, and gives a much clearer picture than an external exam alone. If needed, the doctor can take a small tissue sample through the endoscope during the same visit.
A sinus CT scan is the other key tool. Unlike a standard X-ray, a CT scan shows your sinuses from multiple angles and reveals exactly where blockages are. If surgery becomes an option later, the CT images also serve as a map for the surgeon. The radiation exposure from a modern low-dose sinus CT is very small, roughly comparable to a standard X-ray of the sinuses.
When an Allergist Might Be the Better Fit
If your sinus congestion follows a seasonal pattern, gets worse around pets or dust, or comes with itchy eyes and sneezing, allergies may be the underlying driver. An allergist can run skin or blood tests to identify your specific triggers and build a treatment plan around them. For many people with chronic sinus congestion, treating the allergy is what finally breaks the cycle of recurring infections.
Sometimes both specialists are involved. An ENT might identify structural issues or polyps while an allergist addresses the inflammatory triggers making those problems worse. Your primary care doctor can help you figure out which referral makes sense first based on your symptom pattern.
Navigating Insurance and Referrals
Whether you can go straight to a specialist depends on your insurance plan. If you have an HMO, all your care is coordinated through your primary care physician, and you’ll need a referral before seeing an ENT or allergist. Your PCP schedules the referral to an in-network specialist, and skipping this step means the visit likely won’t be covered.
PPO plans don’t require referrals for any services. You can book directly with a specialist without seeing your primary care doctor first. That said, starting with your PCP is still often practical because they can rule out simpler causes and provide the specialist with useful background if you do need a referral.
What Happens if Surgery Is Needed
Most people with sinus issues never need surgery, but for chronic sinusitis that hasn’t responded to medications, an ENT may recommend one of two main procedures.
Balloon sinuplasty is the less invasive option. A small balloon is inflated inside the blocked sinus passage to widen it. It involves less blood loss, shorter operating time, and a faster return to normal activity. It works well for straightforward blockages without significant disease.
Functional endoscopic sinus surgery (FESS) is more involved. The surgeon removes tissue, bone, or polyps that are blocking drainage. Recovery takes longer, but FESS produces better results when the disease is more advanced or the anatomy is complex. Revision surgery rates are slightly higher after balloon sinuplasty, though the difference is small.
Your ENT will recommend one approach over the other based on what the CT scan and endoscopy reveal. Both are outpatient procedures, meaning you go home the same day.
Symptoms That Need Immediate Attention
Certain sinus symptoms signal a potentially serious complication that requires emergency care, not a scheduled office visit. Swelling around the eye, double vision, eye pain, or difficulty moving your eyes can indicate the infection has spread to the eye socket. A severe headache combined with a high fever, confusion, or changes in mental clarity may point to a rare but dangerous spread toward the brain. If you experience any of these, go to an emergency department. These complications are uncommon, but they require urgent evaluation by a surgical specialist.