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SUPERIOR CANAL DEHISCENCE SYNDROME (SCDS) (has symptoms of (Hearing loss,…
SUPERIOR CANAL DEHISCENCE SYNDROME (SCDS)
is defined as
an opening in the bone overlying the superior semicircular canal
can be categorized into
Congenital
thinning of bone
bilaterally
Acquired
that caused by
Trauma
Age
symptoms can be triggered by
Coughing and sneezing
Loud sound
has symptoms of
Autophony
Hearing loss
Oscillopsia
Sensitive to loud sounds
Hennebert sign
Hypersensitive to bone-conducted sounds
Tullio's phenomenon
Ear fullness
Vertigo
can be assessed by
Vestibular assessment
such as
cVEMP
that show
Low threshold
Presence of cVEMPs in person with AB gap
oVEMP
which are
As SCD worse, oVEMPs much bigger
oVEMP better than cVEMP
Others
MRI
CT scan
Hearing assessment
which may have characteristics of audiogram of
Mostly at low frequency
Large AB gap (>10dB)
Conductive HL
can be managed by
Surgery
VRT
that need to be
carry out postoperative
customized to the individual
Counselling
suspected as
usually occurs