Conditions we treat

Sinus infections and chronic sinusitis

Sinus pressure, a blocked nose and thick drainage can drag on for weeks. When infections keep returning or never fully clear, allergies, nasal polyps or another underlying problem may be part of the story. Our allergists in Arlington, Keller and Mansfield look for those causes and build a plan aimed at fewer flare-ups and fewer rounds of antibiotics.

A woman pressing her forehead with sinus pressure

Quick answer

Sinusitis is inflammation of the sinuses, the air-filled spaces behind your cheeks, eyes and forehead. Most short-term cases follow a cold and usually improve within about 10 days. Sinusitis that lasts 12 weeks or longer, or keeps coming back, is often linked to allergies, nasal polyps or other ongoing inflammation and deserves a closer look.

Common signs
Facial pressure, congestion, thick drainage, reduced smell
Who we see
Children and adults with chronic or recurrent sinus problems
How we test
Allergy testing, nasal exam, imaging review, immune blood tests
Main treatments
Saline rinses, nasal steroids, allergy treatment, biologics
Typical first visit
60–90 minutes

Common signs and symptoms

  • Pressure or pain around the cheeks, eyes or forehead
  • Stuffy nose that makes it hard to breathe
  • Thick yellow or green drainage
  • Postnasal drip and a sore throat in the morning
  • Reduced or lost sense of smell and taste
  • Aching upper teeth
  • Cough that’s worse when lying down
  • Fatigue that comes with every flare

Acute, chronic and recurrent sinusitis

Doctors sort sinusitis by how long it lasts and how often it returns. Most acute cases start with a cold, are caused by a virus and improve with rest, fluids, saline rinses and time. Antibiotics help only when bacteria are likely involved. A cold can leave the sinuses swollen for a week or two, so lingering stuffiness alone doesn’t always mean you need them.

Chronic sinusitis is less about infection and more about ongoing inflammation. It comes in two main forms, with nasal polyps and without them, and it often needs a longer-term plan.

  • Acute: lasts less than 4 weeks, usually after a cold
  • Subacute: lasts 4 to 12 weeks, often a slow-to-clear infection
  • Chronic: lasts 12 weeks or longer, even with treatment
  • Recurrent acute: four or more separate episodes a year, with clear stretches in between

Common causes

  • Common cold viruses
  • Untreated nasal allergies
  • Nasal polyps
  • A deviated septum or narrow sinus openings
  • Smoke, strong fumes and very dry air
  • Dental infections in the upper jaw
  • Low antibody levels, in a smaller number of people

How allergies keep sinuses swollen

When you breathe in pollen or dust mites, allergic inflammation swells the lining of your nose. Swollen tissue can block the small openings that let your sinuses drain. Mucus collects, pressure builds and bacteria have a chance to grow.

That’s why sinus flare-ups in DFW often line up with cedar season in winter, spring tree pollen or the fall ragweed peak. Damp spells after heavy rain can do the same by raising mold counts. Treating the allergy may help keep sinus passages open and lower the number of flares.

Allergy testing shows whether pollen, mold, dust mites or pets are part of the picture. If they are, allergy shots or drops may calm the underlying inflammation over time, rather than treating each flare as it comes.

Two children holding hands in a blooming park

In children

Young children catch a lot of colds, so a runny nose alone doesn’t mean sinusitis. Signs that point to a sinus infection include nasal drainage or daytime cough lasting more than 10 days without improving, or a cold that gets worse after it seemed to be getting better. Enlarged adenoids and allergies can also play a role. For kids with repeat infections, we check for allergies and, when needed, immune problems.

Nasal polyps and harder-to-treat cases

Nasal polyps are soft, painless growths that form in the nose and sinuses because of long-term inflammation. They can block airflow, dull your sense of smell and make sinus infections more likely. They often occur alongside asthma. Steroid sprays or rinses, short courses of oral steroids and surgery can all shrink or remove polyps, though they may grow back over time.

If you have asthma, nasal polyps and reactions to aspirin or ibuprofen, tell us. That combination is called aspirin-exacerbated respiratory disease, or AERD, and it needs a specialized plan. For polyps that keep coming back, biologics such as dupilumab, omalizumab or mepolizumab may shrink polyps and ease congestion for many patients.

Our approach to sinus problems

We review any CT scans and past treatments you bring, examine your nose and run allergy testing. If you have frequent sinus, ear or chest infections, we may order immune blood tests, such as antibody levels and vaccine responses, to see whether your immune system is working as it should.

It helps to know every antibiotic and steroid course you’ve taken for your sinuses in the past year or two. That record shows how often flares happen and how well past treatment worked.

Treatment may include daily saline rinses, a nasal steroid spray used with good technique, and allergy shots or drops when allergies play a role. We work alongside ENT surgeons. If you have large polyps, a structural blockage or symptoms that don’t improve with medical care, we’ll refer you for an ENT evaluation.

Some symptoms can’t wait for an office visit. Get emergency care right away for swelling or redness around the eye, vision changes, a stiff neck, confusion or a severe headache with high fever.

Daily habits that help your sinuses

Small habits add up. Rinsing with saline after yard work or on high-pollen days washes allergens out before they settle in. Using your nasal steroid spray every day, rather than only on bad days, gives it time to work, since many sprays take a week or more to reach their full effect.

Keep indoor air comfortable but not damp, change air conditioning filters regularly and avoid smoke. If you fly often or swim a lot, ask us how to protect your sinuses during those activities.

When to see an allergist

  • You’ve had four or more sinus infections in a year
  • Symptoms have lasted longer than 12 weeks
  • Antibiotics help only briefly, then symptoms return
  • You’ve lost your sense of smell or have nasal polyps
  • Sinus flares line up with allergy seasons
  • You also have asthma that’s hard to control

How we test and treat sinusitis

Every plan starts with the right test. These are the treatments most often used for this condition.

All treatments
An allergist listening to a young girl’s breathing in a bright exam room

Allergy testing

Skin prick, blood, patch and breathing tests that show what is behind your sneezing, rash, cough or food reactions. Skin test results are ready in about 15 to 20 minutes.

A clinician in gloves giving an allergy injection in the upper arm

Allergy shots

A custom mix of the allergens you react to, given as regular injections that build tolerance over time. Walk in during shot hours at any of our three DFW clinics, no appointment needed.

A glass dropper releasing a drop over an amber bottle

Sublingual drops

Needle-free immunotherapy you take at home. A few drops under the tongue each day build tolerance to pollen, dust mites and pets, with far fewer trips to the clinic.

Questions about sinusitis

Do I need antibiotics for a sinus infection?

Often not. Most sinus infections are caused by viruses, and antibiotics don’t help those. Your doctor may suggest antibiotics if symptoms last more than 10 days, are severe, or worsen after starting to improve. If you’re taking antibiotics for your sinuses several times a year, it’s worth looking for an underlying cause.

Can allergies cause sinus infections?

Allergies don’t cause infections directly, but they can set the stage. Allergic swelling narrows the sinus openings so mucus can’t drain, and trapped mucus is easier for bacteria to grow in. Many people with chronic or recurrent sinusitis also have allergies, and treating them may help reduce flare-ups.

Should I see an allergist or an ENT?

Often both, at different stages. An allergist looks for allergies, asthma and immune causes and manages medical treatment. An ENT surgeon examines the sinuses with a small scope and can perform surgery when it’s needed. We coordinate with ENT specialists and will tell you when a referral makes sense.

Are sinus rinses safe?

Yes, when done correctly. A sinus rinse uses a squeeze bottle or neti pot to flush salt water through your nose, clearing mucus and allergens. Always use distilled, sterile or boiled-then-cooled water, never water straight from the tap, and clean and dry the device after each use.

Ready to find out what’s behind your symptoms?

Most new patients are seen within a week. Book online or call the clinic closest to you.