ICD-11 code : AB31.3;
Preferred Label : Superior canal dehiscence syndrome;
ICD-11 definition : Superior canal dehiscence syndrome (SCDS) occurs when thin or dehiscent bone over
the superior semicircular canal, best demonstrated on CT, allows pressure transmission
between the canal and the intracranial space. Vertigo and nystagmus may occur when
the canal is stimulated by loud sounds or changes in middle ear or intracranial pressure.
Hyperacusis to bone-conducted sounds can cause conductive hearing loss, pulsatile
tinnitus, or autophony (hearing one's own body sounds as loud or distorted). While
the bony defect may be congenital, head trauma can be the final step that opens a
functionally mobile labyrinthine window.;
Origin ID : 144677326;
Currated CISMeF NLP mapping
Superior canal dehiscence syndrome (SCDS) occurs when thin or dehiscent bone over
the superior semicircular canal, best demonstrated on CT, allows pressure transmission
between the canal and the intracranial space. Vertigo and nystagmus may occur when
the canal is stimulated by loud sounds or changes in middle ear or intracranial pressure.
Hyperacusis to bone-conducted sounds can cause conductive hearing loss, pulsatile
tinnitus, or autophony (hearing one's own body sounds as loud or distorted). While
the bony defect may be congenital, head trauma can be the final step that opens a
functionally mobile labyrinthine window.
