This study aimed to evaluate primary Sjögren's syndrome patients in terms of hearing and vestibular functions.

The patient group consisted of 35 individuals diagnosed with primary Sjögren's syndrome and a control group of 35 healthy individuals similar in terms of age and gender.

The rate of hearing loss in the patient group was significantly higher than in the control group (p = 0.021). The N1 latency value for the ocular vestibular-evoked myogenic potentials test was significantly longer in the patient group than in the control group (p = 0.037). Additionally, the posterior semicircular canal and lateral semicircular canal vestibulo-ocular reflex gain values were significantly lower than in the control group (p = 0.022 and p < 0.001, respectively).

These results indicate subclinical vestibular involvement and hearing loss in primary Sjögren's syndrome patients. Vestibular-evoked myogenic potentials and video head impulse tests can be used to detect vestibular involvement in primary Sjögren's syndrome patients.

To describe a case of asymptomatic superior semicircular canal dehiscence.

Clinical case report.

A 50-year-old man presenting with right-sided Ménière´s disease also showed an enhanced response on vestibular evoked myogenic potential testing for the left ear. Unilateral left-sided superior semicircular canal bone dehiscence was clearly visualised on a subsequent temporal bone computed tomography scan. These findings were consistent with superior canal dehiscence syndrome. However, the patient did not complain of any specific superior canal dehiscence syndrome symptoms. Given that vestibular evoked myogenic potential testing may detect asymptomatic forms of superior canal dehiscence, as noted in this case, such testing seems to exhibit reduced specificity for superior canal dehiscence syndrome.

An enhanced response on vestibular evoked myogenic potential testing in isolation appears to be a weaker indicator of superior canal dehiscence syndrome, and rather a marker of superior semicircular canal dehiscence.