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Trauma & Injuries

Foreign Body in the Ear

Presence of an external object (e.g., bead, seed, stone, cotton bud tip, insect) lodged within the external auditory canal.

Also known as: Object in Ear Canal, Insect in Ear

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Referral and warning signs

When to refer

Refer to HC3/HC4/ENT Specialist if: Unable to remove the foreign body safely and easily. Button battery suspected or confirmed. Object is sharp or deeply wedged. Tympanic membrane perforation occurred or suspected. Patient is uncooperative requiring sedation/anesthesia. Significant trauma occurred during removal attempts. Impacted vegetable matter that cannot be easily hooked.

Red flags

  • Button battery in ear canal
  • Sharp object in ear canal
  • Evidence of tympanic membrane perforation after attempt
  • Significant bleeding from ear canal
  • Complete inability to visualize or remove object safely

Signs and symptoms

  • Often asymptomatic initially, discovered incidentally.
  • Sensation of blockage or fullness in the ear.
  • Hearing loss (conductive).
  • Ear pain (otalgia) - especially if object causes irritation or attempts at removal cause trauma.
  • Itching.
  • Buzzing or noise in the ear (if live insect).
  • Ear discharge (otorrhea) or bleeding - suggests associated trauma or secondary infection (otitis externa).
  • Visible foreign body on otoscopy.

Risk factors

  • Children <5 years (inserting objects themselves).
  • Use of cotton buds (tip breaking off).
  • Sleeping outdoors or in areas with insects.
  • Individuals with cognitive impairment.

Diagnosis

Clinical assessment

Based on history (patient report or witness) and direct visualization of the foreign body using an otoscope. Assess for associated trauma to the ear canal or tympanic membrane.

Investigations

  • Otoscopy (essential for visualization).

Diagnostic criteria

Direct visualization of a foreign body within the external auditory canal.

Management

Non-pharmacological management

  • Removal Techniques (Choose based on object type, location, patient cooperation):
  • - Irrigation (Syringing): Effective for small, non-vegetable, non-absorbent objects that do not completely block the canal. Use lukewarm clean water or saline. Aim water stream along canal wall past the object. CONTRAINDICATED if tympanic membrane perforation suspected or known, or if object is vegetable matter (seeds, beans - may swell).
  • - Instrumentation (requires good lighting - ideally headlamp/otoscope, magnification, cooperative patient, appropriate instruments):
  • - Hook: Use a fine, blunt hook (ear hook, cerumen loop, right-angle hook) to gently maneuver behind the object and pull it outwards. Good for round/smooth objects.
  • - Forceps: Fine alligator or Hartmann (crocodile) forceps can grasp objects with an edge (e.g., cotton, paper, insect wing). Use with caution to avoid pushing object deeper or causing trauma.
  • - Suction: Can be effective for small, mobile objects or insect fragments.
  • Special Considerations:
  • - Live Insects: Kill first before removal attempts. Instill lignocaine 2%, mineral oil, olive oil, or alcohol into the ear canal. Wait a few minutes, then remove by irrigation or forceps.
  • - Button Batteries: Urgent removal required due to risk of liquefaction necrosis and perforation. Do NOT irrigate. Refer immediately if removal not straightforward.
  • - Impacted Vegetable Matter (Seeds, Beans): Do NOT irrigate (causes swelling). Attempt removal with hook or forceps. Refer if unsuccessful.
  • Patient Positioning/Cooperation: Essential for safe removal. Immobilization (wrapping) or sedation/general anesthesia may be necessary for young children or uncooperative patients.
  • Post-Removal: Inspect ear canal and tympanic membrane for trauma or residual fragments.

Pharmacological treatment

  • Topical Anesthetic: Instilling Lignocaine 2% drops may help numb the canal, especially if insect present or minor trauma.
  • Antibiotic Ear Drops: (e.g., Ciprofloxacin, Ofloxacin, Gentamicin) +/- Steroid may be prescribed for 3-5 days if significant canal inflammation or abrasion occurred during removal.

Monitoring

Follow up if significant trauma occurred or infection suspected.

Complications

  • Trauma to the external auditory canal (abrasion, laceration, bleeding).
  • Tympanic membrane perforation.
  • Otitis externa (secondary infection).
  • Damage to middle ear structures (ossicles) if object pushed through TM.
  • Retention of foreign body fragments.
  • Tissue necrosis (esp. button batteries).

Prevention

  • Educate children not to insert objects into their ears.
  • Supervise young children closely.
  • Avoid using cotton buds to clean inside the ear canal.
  • Use earplugs if sleeping in insect-prone areas.

Patient education

  • Explain successful removal (or need for referral).
  • Instruct on use of antibiotic drops if prescribed.
  • Advise on symptoms of infection or complications requiring return.
  • Educate on prevention, especially avoiding cotton buds and children inserting objects.

Uganda-specific notes

Insects (cockroaches, ants) and seeds are common foreign bodies. Syringing is a common technique but contraindicated for seeds/beans. Instrumentation requires good skill and lighting. Referral may be necessary for difficult cases or uncooperative children.

References

  • Uganda Clinical Guidelines (UCG) 2023

    Chapter 21, Section 21.1.1

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