-IBIS-1.5.0-
tx
eyes/ears/nose/throat
hearing loss
diagnoses

definition and etiology

definition: subjective sensation or objective measurement of hearing impairment of varying degrees

etiology: varied: diagnosis of hearing loss is generally separated into the categories of conductive (auditory canal or middle ear) vs. sensorineural (8th nerve)

signs and symptoms

• loss of sensation of air conducted sound
• loss of sensation of bone conducted sound

course and prognosis

Hearing loss is generally thought of in terms of chronic states; acute infections for instance, are treated by treating the underlying cause; chronic hearing loss is usually gradual unless it is the sequela of an acute episode or trauma

differential diagnosis

• 8th cranial nerve lesion
• cochlear lesion
• blockage of auditory canal
• purulent labyrinthitis
• Meniere's disease
• noise-induced hearing loss
• presbycusis
• acoustic neuroma


footnotes