What could be causing a 2‑year‑old child to hear clicking, high‑pitched noises and what is the recommended evaluation and management?

Evaluation and Management of a 2-Year-Old Hearing Clicking, High-Pitched Noises

Any parental concern about hearing loss or auditory symptoms in a 2-year-old must be taken seriously and requires immediate objective hearing screening and comprehensive audiologic evaluation. 1

Immediate Action Required

Perform objective hearing screening immediately – parental concerns about hearing warrant prompt evaluation regardless of whether the child passed newborn screening. 1 The clicking/high-pitched noises the child is experiencing could represent:

• Tinnitus (the child perceiving sounds)
• Objective sounds (audible clicking from palatal myoclonus or middle ear pathology) 2
• Symptoms of underlying hearing loss

Diagnostic Approach

1. Targeted History and Physical Examination

Obtain specific information about:

• Onset, duration, laterality (one ear vs. both ears) of the clicking sounds
• Whether sounds are continuous or intermittent, present during sleep
• Whether YOU can hear the clicking (objective vs. subjective tinnitus)
• Associated symptoms: hearing difficulty, speech delay, ear pain, vertigo, sensation of blocked ear 3
• Risk factors for hearing loss 1:
  • Family history of childhood hearing loss
  • History of NICU stay >5 days, ototoxic medications, hyperbilirubinemia
  • In utero infections (CMV, toxoplasmosis, rubella)
  • Craniofacial anomalies
  • Recurrent or persistent otitis media ≥3 months
  • Head trauma
  • Neurodegenerative disorders or syndromes

Physical examination must include:

• Pneumatic otoscopy to assess tympanic membrane and middle ear status 1
• Examination for craniofacial anomalies, ear tags, pits
• Direct observation of soft palate during vocalization (palatal myoclonus causes audible clicking) 2
• Neurological examination for focal deficits

2. Objective Hearing Assessment

Refer immediately to pediatric audiologist for comprehensive audiologic examination 1, 4. At age 2, this should include:

• Auditory brainstem response (ABR) testing – essential for confirming hearing status in young children 4
• Tympanometry to assess middle ear function 1
• Age-appropriate behavioral audiometry

Do not delay this referral – children with risk factors or parental concerns require diagnostic audiology assessment by 24-30 months of age at the latest. 1, 4

3. Otolaryngology Referral

Refer to pediatric otolaryngologist for evaluation of:

• Structural ear abnormalities
• Chronic otitis media with effusion (leading cause of acquired hearing loss) 1
• Palatal myoclonus (if clicking is audible to examiner) 2
• Cerumen impaction requiring removal 1

4. Imaging – Only If Indicated

Do NOT routinely obtain imaging unless specific findings are present 5:

• Unilateral symptoms
• Focal neurological abnormalities
• Asymmetric hearing loss on audiometry
• Pulsatile quality to sounds

Common Pitfalls to Avoid

• Never dismiss parental concerns – this is explicitly emphasized as a key principle 1
• Don't assume passed newborn screening means no hearing problem – delayed-onset and progressive hearing loss occurs 1, 4
• Don't use tympanometry or otoscopy alone – these assess middle ear status but do not assess hearing 1
• Don't wait for speech delay to develop – hearing loss must be identified and treated before language impact occurs 4

Management Based on Findings

If hearing loss confirmed:

• Intervention within 1 month of diagnosis 4
• Hearing aids for mild-moderate loss
• Consider cochlear implant evaluation for severe-profound bilateral loss
• Genetics consultation 4
• Ophthalmology evaluation 4
• Early intervention services 4

If otitis media with effusion present:

• Hearing testing when OME persists ≥3 months 6
• Re-examination every 3-6 months until resolved 6
• Consider tympanostomy tubes if persistent with hearing loss 6

If palatal myoclonus identified:

• This is a benign localized movement disorder causing objective clicking 2
• Typically not continuous, ceases during sleep
• May be volitionally controlled by the child
• MRI to exclude anatomical causes if diagnosis uncertain 2

The critical message: immediate audiologic referral is mandatory – this 2-year-old requires comprehensive hearing assessment regardless of the ultimate cause of the clicking sounds, because any auditory symptom with parental concern warrants definitive evaluation. 1