When Does Sinusitis Need an ENT Specialist Instead of a Wait-and-See Approach?

Day nine. The second box of tissues is nearly empty, the pressure behind your left cheekbone has a pulse of its own, and you have Googled your own face twice. A friend says her cousin saw a specialist and “got it all cleared out.” Your partner says give it another week. Somewhere between those two voices sits the honest question: when to see an ENT for sinusitis, and when to simply let the body finish the job it started?

The answer is less dramatic than either camp would like. The overwhelming majority of sinus infections need no specialist at all. A small, identifiable group does, and the difference is not how miserable you feel this morning. It is the pattern over weeks, the presence of a few specific warning signs, and whether the usual first steps have been given a fair chance.

This explainer walks through that pattern, what an ear, nose and throat visit involves, and what specialists can and cannot do once you are in the chair.

Why wait-and-see is the right first move for most sinus infections

Your sinuses are four pairs of air-filled pockets in the bones of the face, each lined with the same moist tissue that lines the nose. Sinusitis simply means that lining has become inflamed and swollen. When it swells, the tiny drainage openings into the nose narrow or close, mucus pools instead of clearing, and pressure builds behind the cheeks, forehead, and between the eyes. That is the whole mechanism behind the ache.

The trigger, in most cases, is a virus. The CDC notes that most sinus infections are viral and that antibiotics do nothing against them, which is why a prescription in the first few days rarely changes the course. The NHS puts the natural timeline plainly: sinusitis usually clears up on its own within two to three weeks. Clinicians call any episode shorter than four weeks acute sinusitis, and the Mayo Clinic describes it as typically starting with a cold and resolving without treatment.

Watchful waiting is therefore not neglect. It is the evidence-based default, and it comes with a job description: rest, fluids, warmth over the face, sleeping slightly propped up, and saline rinses or sprays to help mucus move. A pharmacist can talk through over-the-counter options for pain and congestion; what suits you depends on your other medicines and health conditions, so that conversation belongs with them rather than with a general article.

Where does the waiting end? The CDC gives three practical markers: symptoms that have not improved after ten days, symptoms that are severe, or symptoms that improved and then worsened again. Any of those is a reason to see your primary care clinician, who decides whether an antibiotic is justified. None of them, on their own, is a reason to look for a specialist yet.

When to see an ENT for sinusitis: the timelines that actually matter

ENT stands for ear, nose and throat; the formal title is otolaryngologist, a surgeon trained in disorders of the head and neck. The route to one is almost always through a primary care clinician, and the trigger is usually time rather than intensity. The table below gathers the thresholds that mainstream guidance uses, so the vague word “persistent” gets a number.

Timeline or pattern	What it usually indicates	Who typically manages it
Under 10 days, gradually improving	Viral sinusitis following a cold (CDC)	Self-care, pharmacist advice
10 or more days without improvement, or worse after improving	Possible bacterial infection (CDC)	Primary care clinician
More than 3 weeks, or getting worse	Needs assessment (NHS)	Urgent primary care appointment
4 to 12 weeks	Subacute sinusitis (Cleveland Clinic)	Primary care; referral if not settling
12 weeks or longer despite treatment	Chronic sinusitis (Mayo Clinic)	ENT referral commonly considered
4 or more separate episodes in a year	Recurrent acute sinusitis (Cleveland Clinic)	ENT referral commonly considered
Red-flag signs at any point	Possible complication	Emergency care

Two things stand out. The first is that the specialist column begins at 12 weeks or at the fourth episode, not at the ninth day of a first infection. The second is that the bottom row overrides everything above it. Swelling around an eye on day two matters more than a stuffy nose on day twenty.

Time is not the only ticket to referral. A clinician may refer earlier if symptoms are strikingly one-sided, if there is blood-stained discharge, if a person has a weakened immune system, or if the diagnosis itself is unclear. Those decisions sit with the treating clinician, who has the advantage of actually looking inside your nose.

What are the four cardinal signs of sinusitis?

Ask a specialist what defines sinusitis and you will hear the same four features, which the Mayo Clinic lists for chronic disease: nasal blockage or congestion; thick, discolored discharge from the nose or down the back of the throat; pain, tenderness, or swelling around the eyes, cheeks, nose, or forehead; and a reduced sense of smell and taste.

Each has a mechanism. Blockage is the swollen lining itself, narrowing the airway. Discharge is mucus that has thickened because it cannot drain, and it darkens as immune cells and debris accumulate, whether or not bacteria are involved. Facial pressure is trapped air and fluid pressing on the sinus walls and their nerve supply. Loss of smell happens because the smell receptors sit high in the nasal cavity, exactly where swelling and polyps block airflow first.

Here is the honest caveat. These four features are not a home test. A common cold produces the first three. Allergic rhinitis, inflammation of the nasal lining driven by allergens, produces blockage and discharge too, usually with sneezing and itching. Migraine can produce convincing facial pressure with no sinus involvement at all. Specialists therefore do not diagnose chronic sinusitis from a symptom list alone; the Mayo Clinic describes diagnosis as combining the history with an examination of the nose, often by endoscopy, and imaging when needed.

The value of knowing the four signs is different. They give you a shared language for the consultation. Being able to say “the blockage is worse on the right, the smell loss started around week six, and the pressure is above the eye rather than in the cheek” is far more useful to a clinician than “I’ve felt rubbish for ages.” Pattern, side, and duration are what turn a complaint into a diagnosis.

Sinus infection not going away after 10 days: what is usually happening

The ten-day mark is where many people first feel something has gone wrong, and it is a fair instinct. The CDC uses ten days without improvement as one of its markers for when an antibiotic might be considered, because that is the point at which a bacterial infection becomes more likely to be layered on top of the original viral one. A related pattern is “double sickening,” where you clearly improve around day five or six and then slide backwards with new fever or worsening pain.

Neither pattern means the sinuses are damaged or that a specialist is required. It means the first stage of the pathway has run its course and the next belongs to your primary care clinician. That visit typically covers three questions: is this bacterial, is it something else entirely, and are there any warning signs?

If a bacterial infection seems likely, antibiotics work by killing or halting the growth of bacteria in the trapped mucus. They are not a shortcut for viral illness, and the CDC is explicit that overuse drives resistance and side effects without benefit. If inflammation rather than infection looks like the driver, a clinician may discuss a corticosteroid nasal spray, a class of medicine that dampens inflammation in the nasal lining directly. These sprays work slowly, over days to weeks, rather than within the hour; the choice, duration, and any change to what you are already taking rests with the prescriber.

A lingering infection is also a moment to review the environment. Cigarette smoke, dry indoor air, unmanaged allergies, and repeated colds from young children at home all keep the lining irritated. None of those need an ENT to fix, but all of them shape whether the next infection arrives at all.

Chronic sinusitis symptoms: why 12 weeks is the line specialists care about

Chronic sinusitis has a specific definition: according to the Mayo Clinic, the spaces inside the nose and head stay inflamed and swollen for 12 weeks or longer despite treatment. The word “despite” is doing real work. Chronic sinusitis is not one long infection that somebody failed to treat. It is a different condition, in which the lining stays inflamed for reasons that antibiotics were never going to address.

The symptoms are the four cardinal signs, but the texture changes. Pain often fades into a dull pressure or a sense of fullness. Fatigue creeps in. Many people describe ear pressure, a cough that is worse at night from postnasal drip, bad breath, and a sense that their head is permanently underwater. Smell loss can be the most disabling feature and the one people mention last.

What keeps the lining inflamed? The Mayo Clinic lists nasal polyps, soft non-cancerous growths that hang from the lining like small grapes and physically block drainage; a deviated septum, where the wall dividing the nostrils leans to one side and narrows one passage; allergies and asthma, which share the same inflammatory pathways; aspirin sensitivity; immune system conditions; and, less commonly, infection spreading from an upper tooth root that sits right beneath the cheek sinus.

This is why 12 weeks is where an ENT referral commonly enters the conversation. The question has shifted from “which germ” to “which structure or process,” and answering it requires looking directly at the lining and, often, imaging the anatomy. A specialist is equipped to do both. A primary care clinician may still manage many chronic cases well; referral is a judgment about complexity, not a verdict on severity.

Who is usually referred to an ENT, and who is usually asked to wait

Referral patterns vary between health systems, but the reasoning is consistent across the NHS, Mayo Clinic, and Cleveland Clinic guidance. People who commonly end up in an ENT clinic fall into a handful of groups.

• Those whose symptoms have lasted 12 weeks or more despite an adequate course of treatment from primary care.
• Those with four or more distinct sinus infections in a year, each clearing fully in between.
• Those in whom a clinician suspects polyps, a deviated septum, or another structural cause, particularly when symptoms are stubbornly one-sided.
• Those with blood-stained discharge, unexplained smell loss, or a diagnosis that has not made sense despite treatment.
• Those with a weakened immune system, including from cancer treatment or certain medicines, where infections behave differently.
• Anyone who has had, or is suspected of having, a complication such as infection spreading toward the eye.

The group usually asked to wait is much larger. A first or second sinus infection in the past year, under three weeks old, showing some improvement, with no red flags, is managed at home or in primary care. Seasonal symptoms that track pollen counts and come with sneezing and itchy eyes usually point to allergic rhinitis, which a primary care clinician or an allergist handles well. A headache that is throbbing, one-sided, and comes with light sensitivity is more likely migraine than sinusitis and belongs on a different pathway entirely.

Being asked to wait can feel like being dismissed. It is usually the opposite: a clinician judging that the tools already in play are the right ones and that a specialist visit now would add an appointment without adding an answer. If the picture changes, the decision changes with it. Keeping a simple diary of symptom days, sides, and triggers makes that reassessment far quicker.

How does an ENT check your sinuses? What actually happens at the visit

The first part of the appointment is talking. Expect questions about when symptoms started, whether they come and go or never leave, which side is worse, what you have already tried and for how long, your allergies, asthma, smoking, dental history, and any medicines that affect immunity or bleeding. This is where that symptom diary earns its keep.

Then the specialist looks. The basic examination uses a light and a small speculum to view the front of the nose. The more informative step is nasal endoscopy: a thin, rigid or flexible tube with a light and camera at the tip is passed a few centimeters into each nostril after a numbing and decongesting spray. It takes a few minutes, feels odd rather than painful for most people, and shows the drainage openings, the septum, any polyps, and whether pus is coming from a particular sinus. The Mayo Clinic lists endoscopy as a standard part of diagnosing chronic sinusitis.

Imaging comes next when the picture is still unclear or when treatment is being planned. A CT scan, a series of X-ray images assembled into cross-sections, maps the bony anatomy and shows which sinuses are filled and where the blockages sit. Specialists generally reserve it for persistent or complicated cases rather than ordering it for every stuffy nose, partly because it involves radiation and partly because a CT taken during a cold will look abnormal in almost anyone.

Depending on what the endoscopy shows, the specialist may take a swab of visible pus for culture, arrange allergy testing, or perform a formal smell test. You should leave with a working explanation of what is driving your symptoms and a stepwise plan, which often begins with medicines and rinses before any procedure is discussed.

Can an ENT clear out your sinuses? What procedures actually do

The phrase “clear out” suggests a plumber with a drain snake. The reality is more precise and less final. Specialists do not scrape sinuses clean; they open the pathways so the sinuses can drain and ventilate on their own, and they remove tissue that is physically in the way. The inflamed lining is left in place because it is the lining that keeps the sinus healthy.

Endoscopic sinus surgery is the main procedure. Using the same type of camera used in the clinic, the surgeon works through the nostrils under general anesthesia to remove polyps, widen the natural drainage openings, and take away small pieces of bone or tissue that block them. There are no external cuts. Balloon dilation is a less extensive option in which a small balloon is inflated inside a blocked opening to widen it, suited to some but not all anatomies. Septoplasty straightens a deviated septum when that is contributing.

Surgery is usually considered only after medical treatment has been given a fair trial, and it does not replace that treatment. Most people continue saline rinses and anti-inflammatory sprays afterwards; polyps in particular can regrow, and the underlying tendency to inflammation does not disappear because the anatomy has changed. Newer injectable medicines in the biologic class, which block specific inflammatory signals, are prescribed by specialists for some people with polyps. Whether any of these options fits you is a decision for the treating team based on your anatomy and history.

Risks are real though uncommon: bleeding, infection, scarring that narrows the new openings, temporary numbness of the upper teeth, and, rarely, injury to the thin bone separating the sinuses from the eye or the brain. A candid surgeon will walk through these alongside the alternative of continued medical management, and will not promise a life without symptoms.

When to see an ENT for sinusitis that keeps coming back

Some people never reach 12 continuous weeks yet spend half the year unwell. Each infection clears, with or without antibiotics, and six weeks later another one arrives. The Cleveland Clinic labels this recurrent acute sinusitis when it happens four or more times in a year with clear symptom-free gaps between episodes.

The distinction from chronic sinusitis matters because the questions differ. In chronic disease the lining never settles. In recurrent disease the lining recovers, so something keeps re-triggering it: a narrow drainage opening that blocks with every cold, a deviated septum that channels airflow badly, poorly controlled allergies, exposure to smoke or dust, frequent viral exposure through young children, or, less often, a subtle immune problem.

An ENT referral is commonly considered at this point for two reasons. The first is diagnostic: an endoscopy or CT performed between episodes, when the lining is quiet, can reveal a fixed anatomical narrowing that a clinician cannot see from the front. The second is stewardship. Four courses of antibiotics a year is a meaningful exposure, with side effects and a contribution to resistance the CDC repeatedly warns about, and every round that could be prevented by fixing the underlying cause is worth preventing.

Before the referral, the most useful thing you can do is document. Note start and end dates of each episode, which side dominates, whether a cold preceded it, and what treatment was used. A pattern of same-side infections points toward anatomy; infections that track the seasons point toward allergy; infections that follow every daycare bug point toward exposure. That record shortens the diagnostic path considerably and shifts the conversation from “another infection” to “why this keeps happening.”

Allergies, migraine, or sinusitis? Why getting the label right matters

A large share of people who arrive convinced they have chronic sinus trouble have something else, and the two most common impostors are allergic rhinitis and migraine. Neither is trivial, and both are treated differently, which is why the label matters more than it might seem.

Allergic rhinitis is inflammation of the nasal lining caused by an immune reaction to pollen, dust mite, mold, or animal dander. It produces blockage and discharge, so it overlaps with sinusitis, but the discharge is usually clear and watery, sneezing and itching of the nose and eyes are prominent, and symptoms follow exposure or season rather than a cold. It also predisposes to genuine sinusitis by swelling the drainage openings, which is why the Mayo Clinic lists allergies among the causes of chronic disease. Treating the allergy often treats the recurring infections.

Migraine is the more surprising one. The nerve that carries pain from the face also carries sensation from the sinus linings, so a migraine can produce pressure over the cheeks and forehead, watery eyes, and even nasal congestion. People take decongestants for years for what is actually a neurological condition. Clues pointing away from sinusitis include pain that throbs, worsens with light or movement, comes with nausea, and resolves completely between attacks while the nose stays clear.

Getting this wrong has costs beyond inconvenience. It leads to antibiotics that cannot help, sprays aimed at the wrong target, and occasionally to surgery that was never going to relieve the pain. An ENT is well placed to confirm or rule out sinus disease with endoscopy and imaging, and will often work alongside an allergist or a neurologist when the answer lies elsewhere. A clear “no, this is not your sinuses” is a good outcome, not a wasted visit.

What the following days and weeks usually look like after an ENT referral

Referral is rarely instant, and the gap is not dead time. Your primary care plan continues: rinses, any prescribed spray, allergy control, and the symptom diary. If anything changes sharply during the wait, particularly any of the red-flag signs described later, you go back to primary care or emergency services rather than waiting for the specialist slot.

The first appointment is typically the history and endoscopy described above, often completed in a single visit. If a CT scan is needed it may be arranged for a later date, sometimes timed for when symptoms are at their usual baseline rather than during a flare, so that the images reflect the underlying anatomy rather than a passing cold.

What follows is most often a structured period of medical treatment. Corticosteroid sprays and high-volume saline rinses build their effect gradually, and specialists generally review progress after several weeks rather than several days; the Mayo Clinic frames chronic sinusitis around persistence despite treatment, which implies giving treatment a genuine run. Some people also receive a longer or targeted antibiotic course if cultures point to a specific bacterium, or a short oral steroid course for polyps, decisions the prescriber makes case by case.

If surgery is agreed, expect a pre-assessment visit, a procedure usually performed as a day case, and a first week of stuffiness, mild bleeding, and fatigue while the lining settles. Follow-up visits allow the surgeon to clear crusts and check the openings are healing without scarring. Rinsing continues for weeks, and many people carry on with anti-inflammatory treatment long term. Full assessment of how much the operation has helped usually waits until the lining has healed, which takes weeks rather than days. Your team will give you a timeline that fits your procedure rather than a generic one.

What people often get wrong about sinusitis and ENT care

Green or yellow mucus means bacteria and therefore antibiotics. Color comes from immune cells and their enzymes, which appear in viral infections just as readily. The CDC bases antibiotic decisions on duration, severity, and the double-worsening pattern, not on color.

Antibiotics will shorten a sinus infection. For the viral majority they do nothing to the illness and add a risk of diarrhea, rash, and resistance. They are reserved for cases where the pattern suggests bacterial infection.

An ENT is the person to see for any sinus infection. A first, improving episode does not need a specialist; the value of an ENT lies in persistent, recurrent, or complicated disease, where endoscopy and imaging change the plan.

Surgery ends sinus problems for good. Surgery changes anatomy so the sinuses drain and medicines reach the lining. The tendency to inflammation remains, polyps can return, and most people continue rinses and sprays afterwards. Anyone promising a permanent fix is overstating the evidence.

Nasal sprays are habit-forming. This is true of decongestant sprays, which shrink blood vessels and can cause rebound congestion when used for more than a few days. It is not true of corticosteroid sprays, which act on inflammation and are designed for longer use under a prescriber’s guidance.

Chronic sinusitis is just an infection that never got treated properly. It is a separate inflammatory condition with structural, allergic, and immune contributors, which is exactly why repeated antibiotic courses fail to resolve it.

Sinus pain always comes from the sinuses. Migraine and dental problems both produce facial pain in the same territory, and an examination that shows healthy sinuses is a genuinely useful result.

Questions to ask your care team

A specialist consultation moves quickly, and the questions that matter most are easy to forget once a camera is in your nose. Writing them down beforehand turns a fifteen-minute slot into a conversation you can act on. The list below is a starting point; strike out what does not apply and add what does.

• Based on what you saw on endoscopy, is this chronic sinusitis, recurrent infections, allergy, or something else entirely?
• Are there polyps or a structural blockage, and if so, on which side and how much do they contribute?
• Do I need a CT scan now, and what will it change about the plan?
• What is the medical treatment you want to try first, how long should I give it before we judge whether it is working, and what does “working” look like?
• Which of my current medicines or sprays should continue unchanged, and which should I ask you or my prescriber about before altering?
• Is allergy testing worth doing in my case?
• If surgery is on the table, what specifically would you do, what are the alternatives, and what are the realistic risks for someone with my anatomy and history?
• What symptoms after treatment or surgery should make me call you the same day?
• How will we know if my smell is likely to recover?
• Who do I contact if things worsen before my next appointment?

Two habits make these questions more productive. Bring your symptom diary, because dates and sides anchor the discussion in fact. And ask for the plan in writing or in the patient portal, including the agreed review point, so that both you and the team are measuring against the same timeline. Every decision about starting, changing, or stopping treatment remains with the clinician who knows your case; your job is to make sure they have the full picture.

When to call your doctor: red-flag signs that override waiting

Everything above assumes a sinus problem that is uncomfortable but contained. A small number of infections spread beyond the sinus walls, toward the eye socket, the bone of the forehead, or the lining of the brain, and those situations do not wait for a ten-day rule. Seek emergency care straight away if you notice any of the following, which the Mayo Clinic, NHS, and CDC list as warning signs:

• Swelling, redness, or pain around one or both eyes, especially with pain on moving the eye.
• Double vision, reduced vision, or any change in sight.
• A severe headache unlike your usual ones, or a headache with a stiff neck.
• Confusion, unusual drowsiness, or difficulty staying alert.
• Swelling or redness over the forehead.
• A high fever, which the CDC defines as 102.2°F (39°C) or above, particularly with any of the signs above.

Short of an emergency, the NHS advises an urgent primary care appointment if you have had sinusitis for more than three weeks, if symptoms are getting worse rather than better, or if they are severe. The CDC adds ten days without improvement, worsening after an initial improvement, and multiple sinus infections in the past year as reasons to see a clinician. People with weakened immune systems, or those who have recently had sinus surgery, should call earlier and with a lower threshold.

One more prompt that people underrate: sudden, complete loss of smell that does not return as the congestion clears, or persistent one-sided symptoms with blood-stained discharge. Neither is usually serious, but both deserve a specialist’s eyes rather than another month of waiting.

If in doubt, call. A clinician would far rather hear about a false alarm than see a complication that could have been caught a day earlier. The decision about what happens next always sits with the treating team; your task is simply to make sure they get the chance to make it.

Frequently asked questions

What are the four cardinal signs of sinusitis?

The four features clinicians look for are nasal blockage or congestion, thick discolored discharge from the nose or down the throat, pain or pressure around the cheeks, eyes, or forehead, and a reduced sense of smell and taste, as listed by the Mayo Clinic for chronic sinusitis. They overlap heavily with colds and allergies, so a diagnosis relies on examination of the nose rather than on the symptoms alone.

Can an ENT clear out your sinuses?

Not in the sense of scrubbing them clean. An ENT can open blocked drainage pathways through endoscopic surgery or balloon dilation and remove polyps or bone that obstruct them, so the sinuses drain and medicines reach the lining. The lining itself is preserved, inflammation can persist afterwards, and most people continue rinses and sprays. Surgery is usually considered only after medical treatment has been tried.

What is a red flag for sinusitis?

Red flags are signs that infection may be spreading beyond the sinuses: swelling or redness around the eyes, pain when moving the eye, double or reduced vision, a severe or unusual headache, stiff neck, confusion, swelling over the forehead, or a fever of 102.2°F (39°C) or higher according to the CDC. Any of these warrants emergency care rather than waiting to see whether symptoms settle.

How long should you let a sinus infection go before you go to the doctor?

Mainstream guidance points to about ten days. The CDC advises seeing a clinician if symptoms have not improved after ten days, are severe, or improve and then worsen again. The NHS advises an urgent appointment if sinusitis has lasted more than three weeks or is getting worse. Red-flag signs such as eye swelling or vision changes need care immediately, whatever the day count.

What are the signs you need to see an ENT rather than a family doctor?

Specialist referral is commonly considered when symptoms have persisted 12 weeks or more despite treatment, when you have four or more infections in a year, when a clinician suspects polyps or a structural blockage, when symptoms are persistently one-sided or blood-stained, or after a complication. A first or second infection that is improving does not usually need an ENT. The referral decision rests with your primary care clinician.

Why is my sinus infection not going away after antibiotics?

Several explanations are common. The original illness may have been viral, so antibiotics never had a target. The infection may have settled while allergic or structural inflammation kept the lining swollen. Or the problem may be chronic sinusitis, which is driven by inflammation, polyps, or anatomy rather than bacteria. Persistence beyond several weeks despite treatment is a reason for reassessment and, often, endoscopy.

What are the main chronic sinusitis symptoms?

Chronic sinusitis produces the four cardinal signs in a lower-grade, longer-lasting form: ongoing blockage, thick postnasal drainage, facial pressure or fullness rather than sharp pain, and reduced smell. Many people also report fatigue, ear pressure, a night-time cough, and bad breath. The Mayo Clinic defines the condition by symptoms persisting 12 weeks or longer despite treatment, and diagnosis is confirmed by examination or imaging.

How does an ENT check your sinuses during the first visit?

The specialist takes a detailed history, then examines the nose with a light and usually performs nasal endoscopy, passing a thin camera into each nostril after a numbing spray to view the drainage openings, septum, and any polyps or pus. A CT scan may be arranged if the picture is unclear or a procedure is being planned. Swabs, allergy tests, or smell tests are added when relevant.

Does a CT scan show sinusitis, and will I need one?

A CT scan shows which sinuses are filled and where the bony drainage openings are narrowed, so it is the standard imaging for chronic or complicated sinusitis. It is not routine for short-lived infections, partly because it involves radiation and partly because almost anyone with a cold will have abnormal-looking sinuses. Your specialist decides whether imaging would change the plan.

Is sinus surgery the only option if medicines have not worked?

No. Alternatives include continuing or adjusting medical treatment, treating underlying allergies, targeted antibiotics guided by cultures, and, for some people with nasal polyps, biologic medicines that block specific inflammatory signals. Surgery is one option among these, usually considered when a structural blockage or polyps limit how well medicines can work. The choice depends on your anatomy and history and rests with your treating team.

References

• NHS: Sinusitis (sinus infection)
• CDC: About Sinus Infection (Sinusitis)
• Cleveland Clinic: Sinusitis (Sinus Infection)
• MedlinePlus: Sinusitis

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.