Condition Cluster 01
Sensorineural
Hearing Loss
Damage to the inner ear hair cells or auditory nerve. Permanent, but highly manageable — the right intervention makes the difference between isolation and full participation.
Typical Presbycusis Pattern
"I thought everyone heard the refrigerator humming that loud. It wasn't until my daughter turned down the TV and I couldn't follow the conversation that I realized — I'd been filling in the gaps for years."Margaret T., 64 — Retired teacher, diagnosed with presbycusis
Presbycusis
Gradual bilateral high-frequency loss beginning in the fourth decade. The most common form of hearing loss worldwide — over 37 million Americans live with it.
NIHL
Permanent threshold shift from sustained or acute noise exposure. The classic "notch" at 4kHz is often the first sign — and the first thing most people ignore for years.
Sudden SNHL
Prevalence
5–20 per 100k/year
Unexplained rapid loss in one ear — often noticed waking up or after a loud pop. Treat within 72 hours for the best chance of recovery. This is a medical emergency.
AIED
Prevalence
<1% of SNHL
Progressive bilateral loss that responds to immunosuppressive therapy — rare but treatable if caught early. Often misdiagnosed as age-related loss for years.
91%
of adults with hearing loss go undiagnosed for over 7 years
3×
higher rate of cognitive decline without treatment
2 min
average time to fit modern behind-ear hearing aids
Condition Cluster 02
Conductive
Hearing Loss
Sound blocked, dampened, or distorted before it ever reaches the inner ear. Outer and middle ear problems — many with direct medical or surgical solutions.
"The ENT said 'otosclerosis' and handed me a pamphlet. I stood in the parking lot Googling the word for twenty minutes. When I finally understood it was a bone — one tiny bone — I cried. Because it meant there was something to actually fix."Daniel R., 42 — Software architect, post-stapedectomy
Conductive Loss Pattern (Flat)
Air-Bone Gap
The diagnostic signature of conductive loss — bone conduction is normal, air conduction is reduced. This gap points directly to the outer or middle ear.
Otosclerosis
Abnormal bone growth fixing the stapes — the smallest bone in the body — in place. Progressive, hereditary, and almost always correctable with a 45-minute outpatient procedure.
Cerumen Impaction
Compacted earwax blocking the canal. Accounts for 12 million physician visits per year in the US — and is often the simplest fix in audiology.
Otitis Media with Effusion
"Glue ear" — fluid behind the eardrum without active infection. The leading cause of hearing loss in children under 10. Often resolves spontaneously; grommets when persistent.
Tympanic Membrane Perforation
A hole in the eardrum from trauma, infection, or pressure change. Most small perforations heal within weeks; larger ones may require tympanoplasty.
Condition Cluster 03
Tinnitus &
Phantom Sound
Sound your brain generates without external input. Not imaginary — neurologically real. The question isn't whether it's there; it's which pathway produced it and how to retrain it.
Common Tinnitus Pitch Distribution
Teal bars indicate the 3–6 kHz range where most subjective tinnitus is perceived.
My audiologist called it 'a 4,000 Hz tone at 5 dB SL.' I call it the thing that ended my career as a sound engineer. Same phenomenon — completely different lives.Kevin M., 51 — Former studio engineer
Tinnitus Handicap Inventory
Subjective Tinnitus
Sound perceived only by the patient — no external source. Linked to cochlear damage, noise exposure, or auditory nerve changes. The pitch and loudness vary per person.
Prevalence
15% of adults
Pitch
3–8 kHz most common
Pulsatile Tinnitus
A rhythmic sound synchronized with the heartbeat. Requires vascular imaging to rule out treatable causes — arteriovenous malformation, carotid stenosis, or benign intracranial hypertension.
Prevalence
~4% of tinnitus cases
Pitch
Pulse-synchronous
Objective Tinnitus
Sound audible to an examiner — extremely rare. Causes include palatal myoclonus, patulous Eustachian tube, or vascular loops near the auditory nerve.
Prevalence
<1% of tinnitus
Pitch
Examiner-audible
"I thought I was losing my mind. The ringing started three days after a concert. That was eleven years ago. Sound therapy gave me enough quiet to sleep again."
Priya S., 38 — Graphic designerCondition Cluster 04
Pediatric
Hearing Loss
Every month of unaddressed hearing loss in the first years of life costs language. Early detection isn't just important — it's the entire intervention.
Failed Newborn Screening?
A failed OAE or ABR screen is not a diagnosis — it's a signal for follow-up within 1 month. 80% of referred newborns have normal hearing on retest. Do not wait. Request a diagnostic ABR from a pediatric audiologist.
Mild Congenital Bilateral Loss
"The NICU nurse told us he'd failed the hearing screen and handed us a pamphlet. It was 3 a.m. I spent the next four hours reading everything I could find. Most of it terrified me. I needed someone to tell me: what does this actually mean for his life?"Sarah K. — Mother, Brooklyn, NY. Son diagnosed with moderate bilateral SNHL.
EHDI Critical Timeline
1 month
Complete hearing screening
3 months
Receive diagnostic evaluation
6 months
Begin early intervention
12 months
Cochlear implant evaluation (if indicated)
Congenital Hearing Loss
Present at birth — genetic (50%), infection (TORCH), prematurity, or unknown. Failed newborn OAE/ABR screening is the first signal. Early intervention before 6 months changes everything.
Intervene before 6 months
Meningitis-Related Loss
Bacterial meningitis can cause rapid, severe bilateral loss through cochlear ossification. Cochlear implantation window is narrow — ossification can close it within weeks of infection.
Implant before ossification
Recurrent Otitis Media
Repeated middle ear infections causing fluctuating conductive loss during critical language development years. Grommets restore hearing within hours of insertion.
Language-critical period
Condition Cluster 05
Auditory
Processing Disorders
The audiogram says normal. The experience says otherwise. APD lives in the gap between what the ear receives and what the brain decodes — and it's more common than most clinicians suspect.
Standard Hearing Test
Normal
Pure-tone thresholds within 15–20 dB HL across all frequencies.
The test that doesn't catch APD.
Speech-in-Noise Test
Impaired
QuickSIN or HINT scores fall 8–15 dB below expected.
The test that does.
Three psychologists said ADHD. One audiologist said APD. Same child — completely different intervention. He's in a mainstream classroom now with an FM system. He wasn't broken. He just needed the right signal.James O. — Father, Chicago. Son diagnosed with APD at age 9.
Auditory Processing Disorder
Normal audiogram, impaired comprehension. The ears deliver sound perfectly — the brain's decoding pathways don't. Often misdiagnosed as ADHD or learning disability.
""I can hear you, I just can't understand you""
Spatial Processing Disorder
Difficulty locating sound in space and separating speech from noise — particularly in reverberant environments. Often undetected by standard audiometry.
"Can't locate who's speaking in a group"
Temporal Processing Deficit
Impaired ability to process the rapid timing cues that distinguish speech sounds — "ba" vs "pa," "sit" vs "six." Affects reading, spelling, and music perception.
"Confuses similar-sounding words"
"I've been turning my left ear toward conversations for fifteen years. I assumed it was just how I was wired. Turns out there's a name for it, a test for it, and a training program for it."
Anita R., 52 — Marketing director, diagnosed with spatial processing disorder.About Audiogram
Built for the patient holding a printout they can't read.
Audiogram is a clinical reference library written in patient language — not a substitute for diagnosis, but the bridge between a confusing appointment and a clear next step. Every condition page is reviewed by licensed audiologists.
5 questions · No jargon · Instant results