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Malignant otitis externa (Clinical
presentation (Ear pain
(Deep, boring…
Malignant otitis externa
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Pathophysiology
Agent
Pseudomonas (commonest)
Gram -ves e.g. proteus, Klebsiella
Mechanism
Aggressive, life-threatening infection of EAM
Spreads into bone (mastoid, temporal)
Clinical
presentation
Ear pain
(Deep, boring night pain)
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Diganosis
Examination
ENT
Granulation tissue and exposed bone
at edge of ear canal
Erythema in EAM, discharge
Investigations
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Bloods
FBC, CRP, U+E, LFT
Blood cultures
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History
PC/HPC
Fever, deep boring ear pain, headache, hearing loss,
vertigo, facial weakness
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DH
Current meds, allergies
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SH
Living arrangements, occupation,
smoking, alcohol
Management
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Conservative
Information, advice, support
Admission to hospital
ENT referral
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