366 results
Mastoiditis: Pathogenesis and clinical findings

Acute or Chronic Otitis Media -> 
Stage 1: Hyperemeia of the mastoid
round window -> Labyrinthitis ... symptoms #diagnosis #otology
Hearing Loss - Differential Diagnosis Framework

Hearing Loss Types:
• Conductive
• Sensorineural
• Mixed
Presbycusis is the most common type
Conditions: ○ Labyrinthitis ... Differential #Diagnosis #otology
Labyrinthitis 
Vestibular neuritis + unilateral hearing loss = Labyrinthitis 
1) Vertigo (severe) 
2) Gait instability 
3)
Labyrinthitis ... hearing loss = Labyrinthitis ... head thrust #Labyrinthitis
Differentiating Benign Paroxysmal Positional Vertigo (BPPV) From Vestibular Neuritis-Labyrinthitis
BENIGN PAROXYSMAL POSITIONAL VERTIGO
 • Age: More common
Vestibular Neuritis-Labyrinthitis ... VESTIBULAR NEURITIS/LABYRINTHITIS ... hearing loss in labyrinthitis ... vestibular neuritis or labyrinthitis ... Vestibular #Neuritis #Labyrinthitis
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
Vestibular neuritis/labyrinthitis ... hearing loss (labyrinthitis
Characteristics of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
 • Onset: Sudden
 • Intensity: Severe initially, often decreasing
vestibular neuritis/labyrinthitis ... hearing loss (labyrinthitis
Dizziness - Central and Peripheral Causes - Differential Diagnosis
Central Causes:
 • Cerebrovascular:  vertebrobasilar, TIA, Wallenburg,
Meniere’s • Labyrinthitis
Ear Anatomy - Coronal View
 - External Ear
 - Middle Ear
 - Inner Ear (Eustachian tube)

By
#Ear #Anatomy #otology
Middle and Inner Ear Anatomy
 - Malleus, Incus, Stapes
 - Semicircular Canals
 - Vestibular and Cochlear
#Ear #Anatomy #otology
Dizziness - Differential Diagnosis Framework
Vertigo:
 • Peripheral: Labyrinthitis, BPPV, Meniere's disease, Alternobaric
 • Central: CVA/TIA -
• Peripheral: Labyrinthitis