**6. Neurologic manifestations of SIH**

Hearing changes including disturbed sense of balance, tinnitus and echoing; visual changes including visual blurring and diplopia; various neurological symptoms including photopho‐ bia, phonophobia, amnesia and facial numbness are common [11]. A significantly decreased level of consciousness might be observed in cases with SIH and even they would admit with confusion and syncope [7]. Subtle cognitive deficits are common particularly during epi‐ sodes of headache [2].

Symptoms in SIH patients related to the vestibulocochlear system such as disturbed sense of balance, tinnitus and sense of echoing may be explained by direct transmission of the abnor‐ mal CSF pressure to that in the perilymph [21]. Visual impairment was probably due to stretching of the cranial nerves due to downward displacement of the brain [12].
