# Hearing Loss in Children

> Hearing loss in children covering newborn screening with OAE and BERA, congenital and acquired causes, and early intervention for NEET-PG Paediatrics revision.

- Canonical URL: https://prepelephant.com/topics/neet-pg/paediatrics/hearing-loss-in-children
- Exam / course: NEET-PG · Subject: Paediatrics
- Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team
- First published: 2026-10-14
- Last updated: 2026-10-14
- Reference basis: Nelson Textbook of Pediatrics; Dhingra Diseases of Ear, Nose and Throat
- How to cite: "Hearing Loss in Children", PrepElephant, https://prepelephant.com/topics/neet-pg/paediatrics/hearing-loss-in-children

## Direct answer

Hearing loss in children is most often detected by newborn screening using otoacoustic emissions or automated brainstem response testing, and congenital cases are commonly genetic. Sensorineural loss is the commonest permanent type, and early hearing aids or cochlear implants protect language development. The widely used 1-3-6 benchmark asks for screening by one month, diagnosis by three months and intervention by six months.

## What you must remember

- **Otoacoustic emissions:** test cochlear outer hair cell function, and are absent in significant sensorineural loss or middle ear effusion.
- **Automated auditory brainstem response (BERA):** tests conduction along the auditory nerve and brainstem, and confirms an abnormal screen.
- **GJB2 gene:** the most commonly implicated gene in congenital non-syndromic deafness, encoding connexin 26.
- **Cytomegalovirus:** the commonest non-genetic cause of congenital sensorineural loss, often silent at birth.
- **Other congenital infections:** rubella, syphilis and toxoplasmosis can also damage the cochlea.
- **Acquired causes:** bacterial meningitis, aminoglycoside ototoxicity and severe neonatal hyperbilirubinaemia.
- **1-3-6 benchmark:** screening by one month, diagnosis by three months and intervention by six months.

## A pathway from screening to intervention

Hearing loss is time-sensitive, because language acquisition depends on early auditory input. The steps below show how screening, confirmation and intervention fit together.

1. **Screen the newborn:** test with otoacoustic emissions or automated brainstem response before discharge, since early detection is the foundation of the programme.
2. **Repeat a refer result:** a second test is done within weeks, because vernix or middle ear fluid can cause false positives in the first screen.
3. **Confirm the diagnosis:** brainstem evoked response audiometry confirms loss, with behavioural audiometry added in older children. The target is a confirmed diagnosis by three months.
4. **Determine the type:** tympanometry and bone conduction testing separate conductive from sensorineural loss, which guides treatment.
5. **Investigate the cause:** test for congenital cytomegalovirus, send genetic testing when appropriate and image the inner ear if a malformation is suspected.
6. **Fit amplification:** hearing aids or cochlear implants are fitted, ideally by six months, to protect language development.
7. **Support language:** speech therapy, early education and regular audiological review continue through childhood. In India, programmes such as RBSK include hearing screening.

## Where the exam tries to catch you

Hearing loss questions often test the logic of the screening tests and the timing of intervention.

- **Trap:** equating a passed screen with normal hearing for life — **Correct:** a passed screen does not exclude delayed-onset or progressive loss, so follow-up still matters.
- **Trap:** reading absent otoacoustic emissions as proof of neural deafness — **Correct:** they test cochlear outer hair cells, so failure points to cochlear or middle ear problems, and brainstem response testing assesses the neural pathway.
- **Trap:** waiting for speech delay before referral — **Correct:** the 1-3-6 benchmark demands earlier diagnosis and intervention, since delay harms language.
- **Trap:** assuming congenital cytomegalovirus infection is always symptomatic at birth — **Correct:** most infected infants look normal at birth, yet late sensorineural loss can still develop.

## Frequently asked questions

### What is the 1-3-6 benchmark for childhood hearing loss?

The 1-3-6 benchmark for childhood hearing loss sets screening by one month of age, diagnosis by three months and intervention by six months. It is an internationally used target that protects language development in children with congenital hearing loss.

### What is the difference between otoacoustic emissions and brainstem response testing?

Otoacoustic emissions test the function of cochlear outer hair cells, while brainstem evoked response audiometry tests conduction along the auditory nerve and brainstem. Otoacoustic emissions are used for screening, and brainstem response testing confirms the diagnosis when the screen is abnormal.

### Which congenital infection is the commonest non-genetic cause of hearing loss?

Cytomegalovirus is the commonest non-genetic cause of congenital sensorineural hearing loss, and most infected infants look normal at birth. Rubella, syphilis and toxoplasmosis are other congenital infections that can damage the cochlea.

### Which gene is most often implicated in congenital non-syndromic deafness?

The GJB2 gene, which encodes connexin 26, is the most commonly implicated gene in congenital non-syndromic deafness. Its mutations cause autosomal recessive sensorineural loss, and carrier screening is often part of genetic assessment.

### Why do hearing aids or cochlear implants matter early in childhood?

Early hearing aids or cochlear implants matter because language development depends on auditory input during the first years of life. Intervention by six months gives children the best chance of normal speech and learning outcomes.