Why do I keep getting ear infections?

By Sina Hartung, MMSC-BMI, Harvard Medical SchoolReviewed by Eureka Health Medical Group
Published: July 9, 2025Updated: July 9, 2025

Summary

Frequent ear infections—three or more in six months or four in a year—usually signal an underlying problem such as Eustachian-tube blockage, allergies, immune weakness, or chronic nasal inflammation. Repeated infections can damage hearing and the eardrum if not addressed. Identifying triggers, getting the right ear exam, and sometimes imaging or allergy testing are critical steps to break the cycle.

Could recurring ear pain simply mean chronic otitis media?

Yes. If the ear drum or middle-ear space stays inflamed after an acute infection, fluid lingers and germs find an easy home. “Roughly one in ten adults who get an ear infection go on to have a second episode within three months,” notes the team at Eureka Health.

  • Persistent middle-ear fluid breeds bacteriaEven clear fluid in the middle ear can turn infectious; studies show bacterial growth in 60 % of samples after seven days.
  • Allergies swell the Eustachian tubeSeasonal pollen, dust mites, or food sensitivities can narrow the tube that equalizes pressure, trapping fluid behind the ear drum.
  • Sinus congestion spreads infectionShared drainage pathways allow nasal bacteria to reach the middle ear—people with chronic rhinitis have twice the ear-infection rate.
  • Second-hand smoke irritates the ear liningLiving with a smoker increases adult ear infection risk by 37 %, according to CDC survey data.
  • Fluid persisting beyond 3 months meets chronic-otitis criteriaPhysicians classify otitis media as chronic when effusion or inflammation remains in the middle ear for at least three months after an acute episode. (Merck)
  • Five of six children experience an ear infection by age threeThis high early-life prevalence explains why repeat or lingering infections—key drivers of chronic otitis media—are seen so frequently in pediatric clinics. (HSEnt)

When should frequent ear infections worry you?

Repeated ear infections are not just annoying—they can endanger hearing. “If pain is paired with dizziness, facial weakness, or drainage that smells foul, treat it as an urgent problem,” says Sina Hartung, MMSC-BMI.

  • Fever above 102 °F or chills suggest mastoiditisBone infection behind the ear is rare but needs IV antibiotics or surgery.
  • New hearing loss over 30 dB signals ossicle damageAudiometry that shows this drop requires ENT referral within one week.
  • Ear drainage lasting more than five days points to a perforated eardrumPersistent perforations risk chronic suppurative otitis media.
  • Vertigo or nausea may indicate inner-ear spreadLabyrinthitis can follow untreated middle-ear infection and jeopardize balance permanently.
  • Pulsating ear pain with diabetes raises red flag for malignant otitis externaImmunocompromised patients need emergency evaluation and imaging.
  • Three or more infections in six months meet criteria for ear tube surgeryExperiencing 3 ear infections within 6 months—or 4 in a year—signals refractory disease and is a common threshold ENT surgeons use to recommend tympanostomy tubes for drainage and hearing protection. (Bluemoose)
  • Diagnosis delayed beyond two weeks raises risk of brain abscess or meningitisIn reviews of otitis media with intracranial spread, the mean time from first symptoms to diagnosis was about 14 days; ongoing pain, fever, or discharge past this period markedly elevates the danger of subdural empyema, meningitis, or brain abscess. (PubMedAI)

Could hidden allergies or immune problems be the real culprit?

Often, yes. Up to 40 % of adults with recurrent otitis media have undiagnosed allergic rhinitis. The team at Eureka Health explains that “unchecked nasal inflammation keeps the middle ear from draining and primes it for infection.”

  • Total IgE over 100 kU/L correlates with repeat infectionsHigh IgE suggests atopy; allergy shots cut ear-infection frequency by 50 % in controlled studies.
  • Selective IgA deficiency quadruples riskSimple blood work can detect this common immune gap affecting mucosal defenses.
  • Chronic GERD acidifies the Eustachian tubePepsin detected in middle-ear fluid links reflux to ear disease in 30 % of cases.
  • Nasal polyps block drainageEndoscopy can reveal polyps; removal lowers infection rate within three months.
  • Allergy present in one-fifth of chronic ear casesApproximately 20 % of chronic otitis media patients have underlying allergic sensitization, underscoring the value of formal allergy evaluation in recurrent infections. (ThermoFisher)
  • Nasal allergies inflame Eustachian tubes and trap fluidENT clinicians note that allergy-driven swelling can block the Eustachian tubes, allowing fluid accumulation that predisposes the middle ear to bacterial growth. (ENT GA)

What can you do at home to break the ear-infection cycle?

Target the factors that let fluid sit in the ear. “Daily routine tweaks cut infection days more than half,” says Sina Hartung, MMSC-BMI.

  • Use nasal saline twice dailyRegular rinsing keeps the Eustachian tube clear; a randomized trial showed 43 % fewer ear relapses.
  • Apply warm compresses for 10 minutesHeat thins sticky middle-ear fluid and eases pain; repeat three times a day.
  • Sleep with head of bed raised 6 inchesElevation improves overnight drainage and reduces morning ear pressure.
  • Chew sugar-free gum or practice Valsalva gentlyJaw motion and pressure equalization open the Eustachian tube, but stop if painful.
  • Track flare patterns in a diaryNoting pollen count, colds, or swimming helps spot triggers to avoid.
  • Dry ears immediately after water exposureAfter swims or showers, tilt your head to drain and place 4–5 drops of a 1:1 rubbing-alcohol and white-vinegar solution in each ear to evaporate trapped moisture and curb bacteria growth that sparks swimmer’s ear. (WMC)
  • Avoid smoke and unneeded antibioticsKeeping children away from second-hand smoke and allowing infections to self-resolve—since 90–95 % clear without antibiotics—reduces repeat episodes by preventing tube irritation and the rebound risk tied to unnecessary medication. (Mindd)

Which tests, imaging, and medicines do doctors consider?

Proper evaluation is key; over-using antibiotics without cultures fuels resistance. The team at Eureka Health explains, “We base treatment on otoscopy, tympanometry, and sometimes suctioning fluid for culture rather than guessing the germ.”

  • Tympanometry detects negative middle-ear pressureA flat Type-B curve almost always means fluid behind the drum.
  • Ear swab or tympanocentesis guides targeted antibioticsCulture-directed therapy clears infection 25 % faster than empiric drugs.
  • High-resolution CT scans check for cholesteatomaImaging is needed if infections persist despite treatment or if hearing falls.
  • Short antibiotic courses reduce side effectsFive-day regimens work for uncomplicated cases, according to Cochrane reviews.
  • Topical quinolone drops avoid gut microbiome disruptionEar-specific drops concentrate medicine where it is needed and limit systemic exposure.
  • Pneumatic otoscope confirms fluid by testing drum movementJohns Hopkins Medicine describes using a gentle puff of air to see if the eardrum moves; absent motion points to a middle-ear effusion that may need culture or imaging. (JHM)
  • Acoustic reflectometry offers touch-free detection of effusionThe ENT Center of Utah notes that measuring sound reflected from the drum can rapidly indicate fluid, helping clinicians screen restless children without inserting instruments. (ENT Utah)

How can Eureka’s AI doctor guide my ear-infection care?

Eureka’s AI doctor reviews your symptoms, suggests targeted questions, and can recommend next-step labs or imaging. “We often see patterns—such as seasonal spikes—that patients miss,” notes Sina Hartung, MMSC-BMI.

  • Instant triage flags red-flag symptomsThe app prompts you to seek in-person care if you report high fever or hearing loss.
  • Personalized allergy and immune work-up suggestionsEureka may advise an IgE panel or sinus CT, with the medical team approving orders when appropriate.
  • Culture-guided antibiotic requestsIf fluid sampling suggests Pseudomonas, Eureka can route an antibiotic prescription for physician sign-off.
  • Symptom tracker plots infections over timeGraphs help you and your ENT see whether interventions are working.

Why do users with chronic ear trouble trust Eureka’s AI doctor?

People value a private, judgement-free space that acts fast. Women using Eureka for menopause rate the app 4.8 out of 5 stars—ear-care users report similar satisfaction.

  • Fast answers without waiting roomsMost ear-pain queries receive AI guidance in under two minutes.
  • Data stays encrypted and patient-ownedOnly you and the reviewing clinician access your records.
  • Evidence-based recommendations, not generic adviceAlgorithms mirror current ENT guidelines and update monthly.
  • Seamless hand-off to human doctorsAI suggestions are double-checked by licensed clinicians before orders are placed.

Become your own doctor

Eureka is an expert medical AI built for WebMD warriors and ChatGPT health hackers.

Frequently Asked Questions

Are adults supposed to get ear infections this often?

No. More than two bacterial ear infections in 12 months should prompt a search for allergies, sinus disease, or immune problems.

Does swimming cause chronic ear infections?

Swimming mainly causes outer-ear infections (otitis externa), but trapped pool water in the middle ear after diving can trigger episodes if the eardrum is perforated.

Can I fly with a current ear infection?

Flying with active infection is painful and may rupture the eardrum during descent; postpone travel or use decongestant sprays under medical guidance.

Will ear tubes help adults?

Ventilation tube placement reduces infection frequency by 70 % in adults with persistent middle-ear fluid, though tubes usually fall out within a year.

Is it safe to keep wearing earbuds?

Earbuds trap moisture and bacteria; switch to over-ear headphones until the ear is infection-free for at least two weeks.

Could my CPAP machine be spreading germs to my ear?

Yes. Improperly cleaned tubing can aerosolize bacteria reaching the Eustachian tube. Daily hose cleaning and distilled water lower the risk.

Are probiotics useful for ear infections?

Early studies show selected oral probiotics may cut respiratory infections, indirectly lowering ear-infection risk, but they do not replace antibiotics.

How long before hearing returns after treatment?

Conductive hearing loss usually improves within three weeks once fluid clears; persistent loss beyond six weeks warrants audiology testing.

Does diabetes make ear infections worse?

Uncontrolled blood sugars impair immunity, leading to more severe infections and slower healing, particularly outer-ear infections.

This content is for informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare provider for diagnosis, treatment, and personalized medical recommendations.