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ent.cerumen-impaction.core.v1PRODUCTION
ent.cerumen-impaction.core.v1

Cerumen (earwax) impaction

general_internal_medicinesubacutechronicadultpediatricgeriatric
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Encounter flow

12/12 authored

Canonical 12-phase frame with authored status for this dossier.

Current phase

Frame

Detailed

Frame cerumen as a SELF-CLEANING physiologic secretion that is "impaction" ONLY when it is symptomatic or prevents a needed assessment (AAO-HNS 2017 KAS 2 Schwartz Otolaryngol HNS 2017 PMID 28045591). Asymptomatic, examinable wax is NOT treated (KAS 4). Audiometry, SSNHL steroid pathways, otitis-externa antimicrobials, BPPV repositioning, foreign-body/cholesteatoma surgery are recognised then routed OUT by engine_id.

Inputs
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Actions
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Advance rule
Set
Advance when

cerumen-impaction scope confirmed; out-of-scope concerns (SSNHL/OE/BPPV/surgical) routed by engine_id

Patient inputs (15)

Otoscopy confirms obstructing cerumen AND inspects the visible tympanic membrane / canal — the diagnostic anchor and the safety gate for irrigation (perforation/tube/OE seen) (AAO-HNS 2017 KAS 2/3 PMID 28045591)

Known/suspected TM perforation is a STRONG contraindication to irrigation (middle-ear contamination, ossicular trauma, vertigo) — modifies the modality choice (AAO-HNS 2017 KAS 3 PMID 28045591)

A patent tympanostomy (ventilation) tube is a contraindication to irrigation — same middle-ear-contamination risk as a perforation (AAO-HNS 2017 KAS 3 PMID 28045591)

Prior tympanoplasty / mastoidectomy / canal-wall-down or any surgery affecting the ear canal — guideline exclusion; irrigation contraindicated, manual removal by a specialist (AAO-HNS 2017 KAS 3 + guideline scope PMID 28045591)

An only-hearing ear raises the threshold for any traumatic modality — avoid irrigation; manual removal under direct vision by an experienced clinician (AAO-HNS 2017 KAS 3 management modifiers PMID 28045591)

Active otitis externa / canal inflammation contraindicates irrigation (worsens infection, vertigo) and reframes the visit — route to ent.otitis-externa.core.v1 (AAO-HNS 2017 KAS 3; guideline scope excludes recurrent OE PMID 28045591)

Diabetes is an AAO-HNS management modifier — irrigation-associated otitis externa can seed NECROTIZING otitis externa; prefer non-irrigation (manual/microsuction) (AAO-HNS 2017 KAS 3 PMID 28045591)

Cerumen is "impaction" ONLY if it causes symptoms OR prevents a needed assessment — the threshold to treat at all; asymptomatic examinable wax must NOT be routinely treated (AAO-HNS 2017 KAS 2/4 PMID 28045591)

If hearing loss persists after the canal is demonstrably clear, the loss was NOT (just) wax — evaluate for an alternative diagnosis and route to SSNHL/audiometry; the diagnostic test of treatment (AAO-HNS 2017 KAS 9 PMID 28045591)

Immunocompromise is an AAO-HNS management modifier with the same necrotizing-OE risk profile as diabetes — prefer non-irrigation modalities (AAO-HNS 2017 KAS 3 PMID 28045591)

Cotton-bud / self-instrumentation pushes wax inward and is a recurrence and perforation driver — the core primary-prevention counselling target (AAO-HNS 2017 KAS 1 PMID 28045591)

Recurrent impaction, narrow/stenotic canal, exostoses, hairy canal, or dry brittle wax predict failure of first-line measures and earlier ENT/microsuction referral (AAO-HNS 2017 KAS 3/10 PMID 28045591)

Otorrhea or persistent otalgia after clearance points to otitis externa / otitis media / canal pathology rather than wax — route to ent.otitis-externa.core.v1 (AAO-HNS 2017 KAS 9 PMID 28045591)

Vertigo persisting after clearance (not transient irrigation-provoked caloric vertigo) requires a vestibular workup, not repeat wax treatment — route to ent.bppv.core.v1/vertigo (AAO-HNS 2017 KAS 9 PMID 28045591)

Anticoagulant/antiplatelet therapy is an AAO-HNS management modifier — canal trauma during manual removal (curette) risks bleeding; favour atraumatic softening + irrigation or microsuction by experienced hands (AAO-HNS 2017 KAS 3 PMID 28045591)

* = hard-required. Engine cannot meaningfully run until these are filled.

Severity triggers (7)

7 need judgement
  • informationallife_threateninghearing_loss_persists_after_clearance_route_ssnhl
    Hearing loss persists after the canal is demonstrably clear, OR a sudden (≤72 h) loss out of proportion to the visible wax with Weber lateralising AWAY from the affected ear — the loss was NOT (just) wax (AAO-HNS 2017 KAS 9 PMID 28045591)
    Trigger could not be auto-evaluated — needs clinician judgement.
  • informationalsevereirrigation_contraindicated_perforation_tube_surgery
    Known/suspected TM perforation, patent tympanostomy (ventilation) tube, or prior ear surgery (tympanoplasty/mastoidectomy/canal-wall-down) — STRONG contraindication to irrigation (AAO-HNS 2017 KAS 3 Schwartz PMID 28045591)
    Trigger could not be auto-evaluated — needs clinician judgement.
  • informationalseverediabetic_or_immunocompromised_necrotizing_oe_risk
    Diabetes or immunocompromise with cerumen impaction (± any canal inflammation) — irrigation-associated otitis externa can seed NECROTIZING (malignant) otitis externa (AAO-HNS 2017 KAS 3 PMID 28045591)
    Trigger could not be auto-evaluated — needs clinician judgement.
  • informationalmoderateonly_hearing_ear_avoid_traumatic_modality
    Cerumen impaction in an only-hearing ear — any traumatic modality risks the sole functional ear (AAO-HNS 2017 KAS 3 management modifiers PMID 28045591)
    Trigger could not be auto-evaluated — needs clinician judgement.
  • informationalmoderatevertigo_or_otalgia_not_just_wax
    Otalgia / otorrhea (otitis externa or media) or vertigo persisting after clearance (not transient irrigation-caloric vertigo) — the symptom is not attributable to wax (AAO-HNS 2017 KAS 9 PMID 28045591)
    Trigger could not be auto-evaluated — needs clinician judgement.
  • informationalmildfailed_in_office_removal_ent_referral
    First-line management unsuccessful, recurrent impaction, or narrow/stenotic/exostotic/hairy canal preventing safe in-office clearance (AAO-HNS 2017 KAS 10 PMID 28045591)
    Trigger could not be auto-evaluated — needs clinician judgement.
  • informationalmildanticoagulated_manual_removal_trauma_risk
    Patient on anticoagulant/antiplatelet therapy requiring instrumented removal — canal trauma during blind curettage risks bleeding (AAO-HNS 2017 KAS 3 management modifier PMID 28045591)
    Trigger could not be auto-evaluated — needs clinician judgement.

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Recommended regimen

Symptomatic / obstructing cerumen impaction — softening → irrigation → manual-removal ladder (AAO-HNS 2017 KAS 7)
axis: cerumen_impaction_removal_ladderstep 1 - Step 1 — Confirm impaction & screen irrigation contraindications before any modality
Selected step "Step 1 — Confirm impaction & screen irrigation contraindications before any modality" — Cerumen visible obstructing the canal AND symptomatic OR preventing a needed assessment; asymptomatic examinable wax excluded (do NOT treat — KAS 4)
  • otoscopic_confirmation_and_contraindication_gate_no_treatment_if_asymptomatic
    first line
    decision_gate
    triggers: asymptomatic_examinable_wax, tm_perforation, tympanostomy_tube, prior_ear_surgery, only_hearing_ear, active_otitis_externa
    AAO-HNS 2017 KAS 2/4 (Schwartz PMID 28045591) — treat only symptomatic/obstructing impaction; KAS 3 — capture management modifiers. Known/suspected perforation, patent tube, prior ear surgery, only-hearing ear, or active OE → NO irrigation; proceed direct to manual removal under vision (Step 4) or refer.

outpatient playbook — drug actions (3)

  1. 1. carbamide peroxide otic (active cerumenolytic, intact TM)
    rxcui 47686
    6.5% otic • otic • 5-10 drops BID up to 4 days
    trigger: Confirmed impaction, intact TM, softening as monotherapy or pre-irrigation (AAO-HNS 2017 KAS 7; Cochrane PMID 30043448)
    Active cerumenolytic; drops > no treatment (RR 4.09) but no class superiority — water/saline/oil are equivalent options
  2. 2. docusate sodium otic (pre-procedure softening, intact TM)
    rxcui 82003
    0.5-1 mL • otic • single dwell ~15 min before removal
    trigger: In-office softening immediately before manual/irrigation removal (Piromchai Otol Neurotol 2020 PMID 32658399)
    Single-dwell surfactant; non-inferior comparator to 2.5% sodium bicarbonate (82.6% vs 91.1% clearance)
  3. 3. hydrogen peroxide otic (water-based cerumenolytic, intact TM)
    rxcui 5499
    3% diluted ~1:1 • otic • brief dwell over up to 3-5 days
    trigger: Effervescent softening option, intact TM (AAO-HNS 2017 KAS 7; Cochrane PMID 30043448)
    Water-based cerumenolytic option; equivalent to other agents in the Cochrane review

Auto-drafted A&P note

outpatient

Subjective

- Possible entry pathways: Conductive hearing loss / aural fullness with cerumen visible obstructing the canal on otoscopy — symptomatic cerumen impaction (AAO-HNS 2017 KAS 2, Schwartz Otolaryngol HNS 2017 PMID 28045591); Otalgia, tinnitus, reflex cough (Arnold-nerve), or mild vertigo attributed to obstructing wax — impaction is symptomatic (AAO-HNS 2017 KAS 1/2 PMID 28045591); Cerumen prevents a needed otoscopic / tympanometric / audiometric / pre-operative ear assessment — impaction by the prevents-assessment criterion even if asymptomatic (AAO-HNS 2017 KAS 2 PMID 28045591).

Objective

- No vitals, labs, or imaging entered for this encounter.

Assessment

**Cerumen (earwax) impaction** (ent.cerumen-impaction.core.v1).
Phenotype framing: Terminal differential with named pivots — wax is over-diagnosed: cerumen impaction (wax visibly obstructing + conductive Weber-toward-affected + symptom relief on clearance pivot) vs otitis externa (canal edema/tenderness/otorrhea + tragal pain pivot — route ent.otitis-externa.core.v1) vs otitis media (bulging/retracted TM + URI + middle-ear effusion pivot) vs foreign body (history + discrete object not waxy debris pivot) vs cholesteatoma (retraction-pocket keratin/foul otorrhea/persistent unilateral pivot — surgical, route ENT) vs sudden SNHL (sensorineural pattern, Weber-AWAY, loss out of proportion / persisting post-clearance pivot — route ent.sudden-sensorineural-hearing-loss.core.v1) vs sensorineural presbycusis (bilateral symmetric high-frequency, gradual, no obstruction pivot)
Scope: Frame cerumen as a SELF-CLEANING physiologic secretion that is "impaction" ONLY when it is symptomatic or prevents a needed assessment (AAO-HNS 2017 KAS 2 Schwartz Otolaryngol HNS 2017 PMID 28045591). Asymptomatic, examinable wax is NOT treated (KAS 4). Audiometry, SSNHL steroid pathways, otitis-externa antimicrobials, BPPV repositioning, foreign-body/cholesteatoma surgery are recognised then routed OUT by engine_id.

No severity triggers fired against current inputs.

Plan

Regimen axis: **Symptomatic / obstructing cerumen impaction — softening → irrigation → manual-removal ladder (AAO-HNS 2017 KAS 7)** — step "Step 1 — Confirm impaction & screen irrigation contraindications before any modality".
1. otoscopic_confirmation_and_contraindication_gate_no_treatment_if_asymptomatic (decision_gate, first line) — AAO-HNS 2017 KAS 2/4 (Schwartz PMID 28045591) — treat only symptomatic/obstructing impaction; KAS 3 — capture management modifiers. Known/suspected perforation, patent tube, prior ear surgery, only-hearing ear, or active OE → NO irrigation; proceed direct to manual removal under vision (Step 4) or refer.

Setting playbook (outpatient) — Confirm symptomatic/obstructing impaction, screen the AAO-HNS KAS 3 modifiers, clear with a contraindication-matched modality (softening → irrigation if eligible → manual/microsuction), document resolution, and triage any not-just-wax symptom by engine_id (AAO-HNS 2017 Schwartz PMID 28045591)
2. carbamide peroxide otic (active cerumenolytic, intact TM) 6.5% otic otic 5-10 drops BID up to 4 days — Confirmed impaction, intact TM, softening as monotherapy or pre-irrigation (AAO-HNS 2017 KAS 7; Cochrane PMID 30043448) (Active cerumenolytic; drops > no treatment (RR 4.09) but no class superiority — water/saline/oil are equivalent options)
3. docusate sodium otic (pre-procedure softening, intact TM) 0.5-1 mL otic single dwell ~15 min before removal — In-office softening immediately before manual/irrigation removal (Piromchai Otol Neurotol 2020 PMID 32658399) (Single-dwell surfactant; non-inferior comparator to 2.5% sodium bicarbonate (82.6% vs 91.1% clearance))
4. hydrogen peroxide otic (water-based cerumenolytic, intact TM) 3% diluted ~1:1 otic brief dwell over up to 3-5 days — Effervescent softening option, intact TM (AAO-HNS 2017 KAS 7; Cochrane PMID 30043448) (Water-based cerumenolytic option; equivalent to other agents in the Cochrane review)

Non-pharmacologic actions:
- Irrigation / ear-syringing with body-temperature water/saline ONLY if no irrigation contraindication, typically after softening (KAS 7)
- Manual removal under direct vision (curette/microsuction) — modality of choice when irrigation is contraindicated (KAS 7)
- Re-examine and DOCUMENT resolution of impaction at the end of treatment (KAS 9)
- Counsel: NO cotton buds / self-instrumentation; advise AGAINST ear candling (KAS 1/8)
- Hearing-aid user / cannot-self-report: schedule otoscopic surveillance + softening/microsuction plan (KAS 5/6)

AVOID / contraindication checks:
- No irrigation if known or suspected tm perforation (AAO HNS 2017 KAS 3 Schwartz PMID 28045591 — middle ear contamination/ossicular trauma/vertigo; use manual removal)
- No irrigation if patent tympanostomy ventilation tube (AAO HNS 2017 KAS 3 — same middle ear contamination risk as a perforation)
- No irrigation if prior ear surgery tympanoplasty mastoidectomy canal wall down (AAO HNS 2017 guideline scope + KAS 3 — specialist manual removal)
- No irrigation into an only hearing ear (AAO HNS 2017 KAS 3 — avoid any traumatic modality; manual under direct vision by an experienced clinician)
- No irrigation with active otitis externa (AAO HNS 2017 KAS 3 — worsens infection/vertigo; route ent.otitis externa.core.v1)
- Diabetes or immunocompromise prefer non irrigation necrotizing OE risk (AAO HNS 2017 KAS 3 — irrigation associated OE may seed necrotizing OE; route ent.otitis externa.core.v1 if inflammation present)
- Anticoagulation avoid blind curettage prefer atraumatic softening microsuction (AAO HNS 2017 KAS 3 — canal trauma bleeding risk)
- Do not recommend ear candling (AAO HNS 2017 KAS 8 — ineffective and harmful: burns, occlusion, TM perforation)
- Persistent symptoms despite documented resolution evaluate alternative diagnosis (AAO HNS 2017 KAS 9 — route SSNHL/OE/vertigo by engine_id, do not re treat as wax)

Monitoring

Regimen monitoring:
- re examine and document resolution of impaction at end of in office treatment (AAO-HNS 2017 KAS 9 PMID 28045591)
- if symptoms persist despite resolution evaluate for alternative diagnosis and route by engine id (KAS 9)
- watch for transient caloric vertigo after irrigation vs a true vestibular disorder
- recurrent impactor and hearing aid user scheduled surveillance and softening plan (KAS 1/6)

Setting (outpatient) monitoring:
- Resolution documented (canal/TM now visible) at end of visit (KAS 9)
- If symptoms persist despite resolution → alternative-diagnosis workup and route by engine_id (KAS 9)
- Return precautions: new/worsening pain, otorrhea, bleeding, vertigo, or hearing loss not improving

Follow-up plan: Primary-prevention counselling (KAS 1): do NOT use cotton buds / self-instrumentation (pushes wax in, perforation risk); leave self-cleaning ears alone; appropriate control measures (periodic softening/irrigation, scheduled microsuction) for recurrent impactors and hearing-aid users; explicit advice AGAINST ear candling (KAS 8). Recurrent/narrow/exostotic-canal patients and cognitively-impaired/hearing-aid populations get a scheduled surveillance + clearance plan and ENT linkage; close-loop any routed-out audiometry/SSNHL/OE/vestibular result.
- Close-out criterion: prevention counselling delivered; surveillance/recurrence plan documented; routed-out results closed-loop

Monitoring phase: KAS 9 — at the conclusion of in-office treatment assess and DOCUMENT resolution of impaction (canal/TM now seen). If impaction not resolved, use additional treatment. If full/partial symptoms persist DESPITE resolution, evaluate for an alternative diagnosis: persistent hearing loss → audiometry / SSNHL pathway; otorrhea/pain → otitis externa/media; persistent vertigo → vestibular workup. The response-to-clearance is the key diagnostic test of treatment.

Disposition

Current setting: outpatient — Confirm symptomatic/obstructing impaction, screen the AAO-HNS KAS 3 modifiers, clear with a contraindication-matched modality (softening → irrigation if eligible → manual/microsuction), document resolution, and triage any not-just-wax symptom by engine_id (AAO-HNS 2017 Schwartz PMID 28045591)

Disposition criteria:
- Impaction cleared + resolution documented + symptoms resolved → discharge with prevention counselling (KAS 1/9)
- Asymptomatic examinable wax → no treatment, counselling only (KAS 4)
- Unresolved / recurrent / unsafe in-office → ENT-microsuction referral (KAS 10)
- Persistent symptom or route-out trigger → exit wax pathway, route by engine_id (KAS 9)

Escalation triggers (move to higher acuity):
- First-line management unsuccessful / recurrent / narrow-stenotic-exostotic canal → ENT / microsuction referral (KAS 10)
- Hearing loss persisting after demonstrable clearance / sudden ≤72 h sensorineural pattern → route ent.sudden-sensorineural-hearing-loss.core.v1 (KAS 9)
- Otorrhea / pain out of proportion / granulation in a diabetic-immunocompromised host → route ent.otitis-externa.core.v1 (necrotizing OE)
- Vertigo persisting after clearance (not transient caloric) → route ent.bppv.core.v1 / vestibular workup

Earlier-Return Triggers

Return-precaution thresholds (watch for):
- [LIFE_THREATENING] Hearing loss persists after the canal is demonstrably clear, OR a sudden (≤72 h) loss out of proportion to the visible wax with Weber lateralising AWAY from the affected ear — the loss was NOT (just) wax (AAO-HNS 2017 KAS 9 PMID 28045591)
- [SEVERE] Known/suspected TM perforation, patent tympanostomy (ventilation) tube, or prior ear surgery (tympanoplasty/mastoidectomy/canal-wall-down) — STRONG contraindication to irrigation (AAO-HNS 2017 KAS 3 Schwartz PMID 28045591)
- [SEVERE] Diabetes or immunocompromise with cerumen impaction (± any canal inflammation) — irrigation-associated otitis externa can seed NECROTIZING (malignant) otitis externa (AAO-HNS 2017 KAS 3 PMID 28045591)

Citations

- AAO-HNS Clinical Practice Guideline (Update): Earwax (Cerumen Impaction) — Schwartz et al, Otolaryngol Head Neck Surg 2017;156(1_suppl):S1-S29 (PMID 28045591); Executive Summary 2017;156(1):14-29 (PMID 28045632); Corrigendum 2017;157(3):539 (PMID 28786340); Plain Language Summary 2017;156(1):30-37 (PMID 28045640). Verified 2026-05-17 as still the current AAO-HNS authority (replaced the 2008 guideline; not superseded). Supplemented by the Cochrane "Ear drops for the removal of ear wax" review (Aaron/Burton 2018 CD012171.pub2, PMID 30043448; superseding CD004326.pub2 PMID 19160236 and CD004400 PMID 12918014), Piromchai Otol Neurotol 2020 cerumenolytic RCT (PMID 32658399), and the irrigation-complication literature (Schmiemann HNO 2009 PMID 19557323; Ogunleye Afr J Med Med Sci 2004 PMID 15490792; Thomas J Laryngol Otol 2012 PMID 22643328; Bird Aust Fam Physician 2003 PMID 12666354). [PMID:28045591](https://pubmed.ncbi.nlm.nih.gov/28045591/)
- Cited evidence (PMID 28045632) [PMID:28045632](https://pubmed.ncbi.nlm.nih.gov/28045632/)
- Cited evidence (PMID 28786340) [PMID:28786340](https://pubmed.ncbi.nlm.nih.gov/28786340/)
- Cited evidence (PMID 28045640) [PMID:28045640](https://pubmed.ncbi.nlm.nih.gov/28045640/)
- Cited evidence (PMID 30043448) [PMID:30043448](https://pubmed.ncbi.nlm.nih.gov/30043448/)

Last reconciled with current guidelines: 2026-05-17.
References
  • AAO-HNS Clinical Practice Guideline (Update): Earwax (Cerumen Impaction) — Schwartz et al, Otolaryngol Head Neck Surg 2017;156(1_suppl):S1-S29 (PMID 28045591); Executive Summary 2017;156(1):14-29 (PMID 28045632); Corrigendum 2017;157(3):539 (PMID 28786340); Plain Language Summary 2017;156(1):30-37 (PMID 28045640). Verified 2026-05-17 as still the current AAO-HNS authority (replaced the 2008 guideline; not superseded). Supplemented by the Cochrane "Ear drops for the removal of ear wax" review (Aaron/Burton 2018 CD012171.pub2, PMID 30043448; superseding CD004326.pub2 PMID 19160236 and CD004400 PMID 12918014), Piromchai Otol Neurotol 2020 cerumenolytic RCT (PMID 32658399), and the irrigation-complication literature (Schmiemann HNO 2009 PMID 19557323; Ogunleye Afr J Med Med Sci 2004 PMID 15490792; Thomas J Laryngol Otol 2012 PMID 22643328; Bird Aust Fam Physician 2003 PMID 12666354). — PMID:28045591
  • Cited evidence (PMID 28045632) — PMID:28045632
  • Cited evidence (PMID 28786340) — PMID:28786340
  • Cited evidence (PMID 28045640) — PMID:28045640
  • Cited evidence (PMID 30043448) — PMID:30043448