In Reply We thank Drs Curthoys and Halmagyi for their interest in our recently published scoping review.1 Both have raised some concerns on the validity of our review, which we address herein.
First, we fully agree with Curthoys and Halmagyi that neither the head impulse test (HIT), nor the caloric test, nor any other vestibular test is able to identify the cause of the vestibular deficit. But both (not as stand-alone but complementary tests and possibly with the help of other methods) may be able to localize the side of the lesion in peripheral vestibulopathies.
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Walther LE, Löhler J, Schmucker C. What Does Head Impulse Testing Really Test?—Reply. JAMA Otolaryngol Head Neck Surg. 2019;145(11):1080–1081. doi:10.1001/jamaoto.2019.2779
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