Abstract
The purpose of this report is to call attention to a common form of vertigo that is generally unrecognized and often erroneously attributed to cerebral arteriosclerosis. As in true objective vertigo the patient complains that, with a sudden change in head position, objects begin to move, usually revolving clockwise or counter-clockwise. There is a sense of falling to one side, a need to hold on for support or to return to the original bodily position. The mechanism of this vertigo is not established, but clinical evidence is offered to show that it results from cervical nerve root irritation due to

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