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Diseases of external ear - Coggle Diagram

- - - - cause: Penetrating trauma "Pseudomonas"
      - Clinical manifestation: Swelling, pain, redness, tenderness
      - Complications: abscess, cauliflower
      - Treatment: antibiotic, analgesics, drain abscess
    - - bacterial / viral / Fungal
      - Infectious or reactive
      - Predisposing factors
        
        Manipulation
        
        Ear discharge
        
        Hot weather, sweating , humidity
        
        allergy
      - localized (Furunculosis)
      - diffuse
    - - Serious and fatal
      - In immunocompromised patients "DM/ HIV/ renal failure"
      - Not neoplastic
      - causative organism: Pseudomonas aeruginosa
      - Can spread intracranially and cause cranial nerve palsy :star:
      - Clinical picture
        
        Clinical signs
        
        Imaging
        
        Symptoms
        
        Treatment
    - - Predisposing factors: Humidity, sweating
      - Symptoms
      - Clinical signs
      - Treatment
    - - Bollous myringitis (tympanic membrrane)
        
        Self-limiting --> just analgesia
        
        Pain
        
        After upper respiratory tract infection
      - Ramsay Hunt syndrome
        
        Herps Zoster Virus
        
        Triad
        
        poor prognosis (even with treatment)
    - - Eczema
      - Seborrheic dermatitis
    - - Chronic suppurative otitis media
      - Labyrinthitis
      - Fungal external otitis
      - Otitis media effusion
  - - - Bony origin
        
        Single "osteoma"
        
        Multiple "exostosis"
      - Treat
    - - Skin origin
      - Symptoms
      - Diagnosis
      - Treatment
  - - - Site
      - Treat
      - Special considerations
        
        Plant FB (never wash)
        
        Batteries
        
        Living FB
        
        N.B: never wash if FB is impacted
        
        Children
      - complications during removal
        
        Tympanic membrane perforation
        
        Ossicular disconnection
        
        Injury of external auditory canal
        
        VII cranial nerve injury
  - - - After trauma/ burns/ piercing
      - Treatment: Steroids/ Laser/ Surgery
    - - Secretion of sebaceous glands of external part of external auditory canal
      - Function of wax: Protection
      - N.B: wax causes symptoms only when impacted
      - Impacted wax is the most common sause of conductive hearing loss in adults
      - Treatment