Ear disorders cover a wide range of conditions affecting the external, middle, or inner ear. They can cause symptoms like hearing loss, pain, discharge, balance problems, and tinnitus. Ear problems can impact quality of life significantly and may be temporary or permanent depending on the underlying cause and timely treatment.
Causes
- Infections: Otitis externa (outer ear infection), otitis media (middle ear infection), labyrinthitis (inner ear infection)
- Trauma: Barotrauma from pressure changes, perforated eardrum, head injuries
- Wax impaction: Build-up of earwax causing blockage and discomfort
- Tumours: Rare, such as cholesteatoma or acoustic neuroma
- Autoimmune diseases: Affecting the inner ear structures
- Congenital abnormalities: Structural problems from birth
- Degenerative changes: Like presbycusis (age-related hearing loss)
Pathophysiology
- Ear disorders usually involve inflammation, infection, or structural damage.
- Otitis externa is caused by inflammation of the ear canal skin, often due to bacteria or fungi.
- Otitis media involves infection behind the eardrum, leading to fluid accumulation and increased pressure.
- Inner ear disorders such as labyrinthitis cause inflammation of the labyrinth, affecting both hearing and balance.
- Acoustic trauma damages the tiny hair cells in the cochlea, leading to sensorineural hearing loss.
Signs and Symptoms
- Ear pain (otalgia)
- Hearing loss (conductive or sensorineural)
- Tinnitus (ringing in the ear)
- Ear discharge (otorrhoea)
- Vertigo or balance problems
- Fullness or pressure sensation in the ear
- Fever and general malaise in infectious cas
Risk Factors
- Recurrent upper respiratory infections
- Swimming or water exposure (especially for otitis externa)
- Allergies or sinusitis
- Smoking and passive smoking (increases risk of otitis media)
- Use of hearing aids or ear plugs without proper hygiene
- Age extremes (children and older adults more susceptible)
- Family history of hearing loss
Investigations
- Otoscopy: To inspect the ear canal and tympanic membrane
- Tympanometry: Measures movement of the eardrum and middle ear pressure
- Audiometry: Hearing tests to assess type and degree of hearing loss
- Ear swab and culture: For cases of persistent discharge or infection
- CT or MRI scan: In cases of suspected complications like mastoiditis, cholesteatoma, or acoustic neuroma
- Blood tests: Rarely needed but may help in suspected systemic infection or autoimmune conditions
Management
1. Non-Pharmacological Management
- Aural toilet: Careful cleaning of the ear canal, especially for wax impaction or otitis externa
- Avoidance of water exposure: Infections may require keeping the ear dry
- Patient education: Proper ear hygiene and avoiding cotton bud use inside the ear
- Hearing aids: For irreversible hearing loss, fitted by audiologists
2. Pharmacological Management
- Antibiotic ear drops: For bacterial otitis externa (e.g., ciprofloxacin or aminoglycosides)
- Oral antibiotics: For acute otitis media if symptoms are severe or persistent (e.g., amoxicillin)
- Steroid ear drops: To reduce inflammation in otitis externa
- Antifungal drops: In cases of fungal ear infections
- Analgesia: Paracetamol or ibuprofen for pain relief
- Antiviral drugs: In rare cases of viral labyrinthitis (e.g., herpes infections)
3. Surgical Management
- Myringotomy: Small incision in the eardrum to drain fluid in chronic otitis media
- Grommet insertion: Small tubes placed in the eardrum to ventilate the middle ear, mainly for children with glue ear
- Mastoidectomy: Surgical removal of infected mastoid bone in cases of mastoiditis
- Removal of tumours: Such as acoustic neuroma through specialised neurosurgery
- Cochlear implants: For profound sensorineural hearing loss
Complications
- Permanent hearing loss
- Tympanic membrane perforation
- Chronic suppurative otitis media (persistent ear discharge)
- Mastoiditis (infection of the bone behind the ear)
- Meningitis (rare but serious)
- Balance disorders and persistent vertigo
- Cholesteatoma (destructive skin cyst in the middle ear)
References
- NICE Clinical Knowledge Summary: Otitis externa and Otitis media (2023)
- NICE Guideline [NG293]: Hearing loss in adults: assessment and management
- Royal College of Surgeons (ENT UK) Patient and Professional Guidelines
- Royal College of Paediatrics and Child Health (RCPCH) guidance on children’s ear infections
- GMC Good Medical Practice: Clinical Management and Patient Safety