Diagnosis and Management of Low and High Frequency Hearing Loss

Primary Differential Diagnosis

The American Academy of Otolaryngology-Head and Neck Surgery suggests that Ménière's disease is the classic cause of low-frequency sensorineural hearing loss that can progress to involve multiple frequencies while initially sparing mid-frequencies 1, 2
Ménière's disease presents with episodic vertigo, fluctuating hearing loss in low- to mid-frequency ranges, tinnitus, and aural fullness in the affected ear, according to the American Academy of Otolaryngology-Head and Neck Surgery 1, 2
The American Academy of Otolaryngology-Head and Neck Surgery recommends that audiometry is mandatory for diagnosis—definite Ménière's disease requires documented fluctuating sensorineural hearing loss on at least one occasion before, during, or after a vertigo episode 1
The hearing loss typically starts unilaterally and may show asymmetry between ears, as stated by the American Academy of Otolaryngology-Head and Neck Surgery 1
Certain genetic mutations can produce "cookie-bite" or U-shaped audiometric configurations with preserved mid-frequency hearing, as noted in Diabetes Care 3

Complete audiometry must include air and bone conduction thresholds at 250-8000 Hz, speech recognition thresholds, and word recognition scores to distinguish sensorineural from conductive components, according to the American Academy of Otolaryngology-Head and Neck Surgery 1, 4, 5
Mid-octave frequencies should be measured if differences between standard frequencies exceed 20 dB, as recommended by the American Academy of Otolaryngology-Head and Neck Surgery 6
Tympanometry is essential to rule out conductive components from otitis media with effusion, which can cause low-frequency hearing loss but would show abnormal middle ear function, as stated by the American Academy of Otolaryngology-Head and Neck Surgery 7
MRI with gadolinium of the brain and internal auditory canals is mandatory for all confirmed sensorineural hearing loss to exclude vestibular schwannoma and other retrocochlear pathology, according to the American Academy of Otolaryngology-Head and Neck Surgery and Praxis Medical Insights 1, 5, 8

Always remove impacted cerumen before establishing a diagnosis, as it causes conductive hearing loss that confounds the clinical picture, as recommended by Praxis Medical Insights 5
Tuning fork testing should be performed to distinguish conductive from sensorineural components before triggering the sensorineural hearing loss evaluation pathway, according to the American Academy of Otolaryngology-Head and Neck Surgery and Praxis Medical Insights 4, 5
Otitis media with effusion commonly causes low-frequency conductive hearing loss in children and can mimic sensorineural patterns if middle ear function is not assessed, as stated by the American Academy of Otolaryngology-Head and Neck Surgery 7
Audiometric testing must be completed within 14 days of symptom onset for sudden hearing loss to enable accurate diagnosis and timely treatment decisions, according to the American Academy of Otolaryngology-Head and Neck Surgery and Praxis Medical Insights 4, 5

Hearing impairment in both high-frequency and low- to mid-frequency ranges is approximately twice as prevalent in people with diabetes compared to those without, after adjusting for age, as noted in Diabetes Care 3
Proposed mechanisms include hyperglycemia and oxidative stress contributing to cochlear microangiopathy and auditory neuropathy, as stated in Diabetes Care 3
Risk factors include low HDL cholesterol, coronary heart disease, peripheral neuropathy, and general poor health, according to Diabetes Care 3
Otitis media with effusion is common in children and causes conductive hearing loss that must be distinguished from sensorineural patterns, as stated by the American Academy of Otolaryngology-Head and Neck Surgery 7