-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