Otitis media with effusion fills the middle ear with fluid without an acute infection and causes mild, fluctuating conductive hearing loss: the child hears, but imprecisely and intermittently - exactly during the months of intensive speech-sound learning. That is why progress in therapy delivered alongside unrecognised effusion may fluctuate with hearing, even when the child works hard in sessions.
What is otitis media with effusion?
Otitis media with effusion, also called glue ear, is fluid in the middle ear without signs of acute infection. It differs from acute ear infection, which starts suddenly and brings pain, fever and clear signs of illness. With effusion, the child usually has no fever and no ear pain - hearing is simply worse for as long as the fluid stays.
It is the most common cause of acquired hearing loss in children. An estimated 50 to 90% of children experience effusion before the age of 5, and on any given day fluid in one or both ears affects about 15-20% of preschool children. After the age of 6, prevalence clearly declines.
How does fluid change hearing?
Lingering fluid dampens sound transmission, so for as long as it is present it causes conductive hearing loss - persistent or fluctuating over time. The average hearing-level decrease is about 10-15 dB - for reference, hearing loss is usually defined as hearing only above 20 dB in one or both ears - and with chronic effusion significant hearing loss is found in at least half of children. Severity changes from day to day: effusion can come and go, so a child may respond normally one day and ask for the same sentence to be repeated the next.
This is usually mild and unstable hearing loss, not total or permanent deafness. Permanent sensorineural loss is a separate diagnostic path, assessed by the physician.
Parent-observable signs are collected in the hearing section of our article on language development in bilingual children. We do not repeat the list here, because with effusion the mechanism matters more than the list itself: hearing fluctuates, so the pattern of difficulty fluctuates with it.
When effusion comes with a chronic runny nose, mouth breathing and snoring, an enlarged adenoid may sit in the background - we cover that thread in our article on when mouth breathing should be brought to a speech therapist.
Why may therapy stall?
Learning speech sounds needs a stable auditory model: a child must hear the difference between sounds, word endings and quiet syllables many times over to reproduce them. With fluctuating effusion, that model is there one day and gone the next - an exercise that worked yesterday falls apart today, not from lack of motivation but from lack of access to sound.
ENT guidelines recommend telling families of children with bilateral effusion and confirmed hearing loss directly about the possible impact on listening, language, behaviour and learning. At the same time, prospective studies do not confirm that effusion permanently damages language development in otherwise healthy children: the largest meta-analysis found no to very small associations of uncertain clinical relevance, and a large cohort followed to age 3 found no significant link between time with fluid and later speech and language.
That is why, with effusion, we describe reduced audibility for as long as fluid persists and we keep speech and hearing under review - without claiming that fluid causes a lasting language disorder. The physician gives separate attention to at-risk children: those with earlier permanent hearing loss, congenital syndromes and clefts, and those with developmental and sensory disorders.
What does this mean in practice?
When speech develops slowly despite the effusion clearing, we return to broader diagnostics - our article on delayed speech development and the moment of consultation helps with that. And when speech is very limited and the child cannot wait to get a message across, day-to-day support is described in our material on AAC for a child who is not yet speaking.
Watchful waiting first: usually about three months
Most effusion episodes clear on their own within weeks to months. After an acute ear infection, 75-90% of residual fluid disappears within 3 months, and post-infection fluid usually resolves within 3-6 weeks. That is why, in children outside the at-risk group, the standard is calm observation for about 3 months from effusion onset - or from diagnosis when onset is unknown - before the physician considers further steps.
After three months the physician reassesses hearing: with bilateral effusion and hearing loss, review is the rule; with unilateral effusion, it is a shared decision with parents. When fluid is present but hearing is normal, observation can end. With chronic effusion, reviews happen every 3-6 months, and GP monitoring may continue for up to a year if symptoms change.
How does the physician assess hearing with effusion?
The physician usually confirms fluid by looking in the ear and refers for hearing tests when effusion lasts beyond 3 months. Full assessment covers otoscopy, upper-respiratory health and the child's development, hearing testing and tympanometry. In at-risk children (permanent hearing loss independent of effusion, Down syndrome, cleft palate, craniofacial syndromes, developmental and sensory disorders, significant uncorrectable visual impairment), hearing is tested regardless of how long effusion has lasted, and the physician checks for effusion at diagnosis of the underlying condition and again around 12-18 months of age.
Tympanometry helps when the picture after otoscopy is uncertain or the ear is hard to visualise - it then confirms what the physician saw or stands in for it. Healthy children without symptoms are not screened in this direction. And when an abnormal newborn hearing screen was attributed to effusion, documented follow-up confirming normal hearing after the fluid clears is needed.
Red flags for prompt medical assessment
Effusion itself is rarely an emergency, but some symptoms should not wait for the next review. Prompt medical assessment is needed for: ear discharge (including discharge that persists despite treatment after grommet insertion), swelling, redness and tenderness behind the ear with a protruding auricle, and also neck stiffness, drowsiness, severe headache, persistent vomiting or signs of severe systemic infection.
These signs point to the physician
Role of speech therapy
Speech therapy works after effusion clears and alongside ENT and audiology care - never instead of it, and it is never a hearing assessment. The rhythm of therapy while fluid persists is agreed with the treating therapist, based on the child's current hearing and the physician's recommendations.
The scope of therapy is described on our speech therapy page for Gdansk.
Speech therapy consultation in Gdansk
During ENT observation or after it ends, we welcome families for a consultation at StacjaMowa - Morena, Gdansk sits close to the ENT practices that families already work with for effusion and hearing checks.
Key takeaways
- Middle-ear fluid usually causes mild, fluctuating conductive hearing loss, not total or permanent deafness.
- Most effusions clear on their own within weeks to months; in children outside the at-risk group, about three months of observation is the standard.
- Studies do not confirm that effusion causes lasting language disorders in otherwise healthy children - so we monitor speech and hearing instead of diagnosing ahead of the evidence.
- Speech therapy works during observation and after effusion clears, alongside ENT care - never instead of it.
Sources
- NICE NG233: Otitis media with effusion - recommendations
- NICE NG233: Otitis media with effusion - context
- Rosenfeld RM et al. (2016). Otitis Media with Effusion. American Family Physician
- American Academy of Pediatrics (2004). Otitis Media With Effusion. Pediatrics
- NIDCD: Ear Infections in Children
- NHS: Glue ear
- Roberts JE et al. (2004). Otitis media and speech-language outcomes - meta-analysis. Pediatrics
- Paradise JL et al. (2000). Middle-ear effusion and language outcomes at age 3 - Pittsburgh cohort. Pediatrics
- AAO-HNS: Otitis media with effusion guideline fact sheet
- NICE NG91: Otitis media (acute) - hospital referral criteria
Want to learn more about therapy options?
Learn more about this therapyFrequently asked questions
- Does fluid in the ear mean a child hears worse permanently?
- Usually not. Effusion causes mild, fluctuating conductive hearing loss that resolves with the fluid. Permanent sensorineural loss is a separate diagnostic path and is assessed by the physician.
- How long does ear fluid usually last?
- Most episodes clear on their own within weeks to months, and after an acute ear infection 75-90% of residual fluid disappears within 3 months. In children outside the at-risk group, calm observation for about 3 months is the standard.
- Does otitis media with effusion cause a lasting speech or language disorder?
- Studies do not confirm that. The largest meta-analysis of prospective studies found no to very small links between effusion and later speech and language, and a large cohort followed to age 3 found no significant associations. That is why we monitor listening and speech instead of diagnosing ahead of the evidence.
- When are a hearing test or tympanometry needed?
- When effusion persists for at least 3 months, or when the child belongs to the at-risk group - then regardless of duration. The physician usually starts by looking in the ear and orders tympanometry when the picture after otoscopy is uncertain.
- Which children does the physician monitor more closely?
- Children with permanent hearing loss independent of effusion, Down syndrome, cleft palate, craniofacial syndromes, developmental and sensory disorders, and significant uncorrectable visual impairment. Their hearing is tested regardless of effusion duration, and the physician checks for effusion at diagnosis of the underlying condition and again around 12-18 months of age.
- When should effusion prompt an urgent visit to the physician?
- With ear discharge, swelling and redness behind the ear with a protruding auricle, and with neck stiffness, drowsiness, severe headache, persistent vomiting or signs of severe systemic infection. Documented follow-up is also needed when normal hearing after the fluid clears is not confirmed, where fluid explained an abnormal newborn screen.
