Abstract
The author regarded “positional vertigo of benign paroxysmal type”(Dix and HALLPIKE, 1952) as a single independent clinical entity. Strict criteria for the diagnosis of this disease were proposed eliminating the ambiguity in the diagnosis. Current problems, on positional vertigo of benign paroxysmal type were also discussed. It was proposed the diagnosis of positional vertigo of benign paroxysmal type could only be adequately made when following five conditions were confirmed. They are (1) paroxysmal postural vertiginous attack,(2) the attack not associated with auditory symptoms including impaired hearing, tinnitus and fullness,(3) rotatory nystagmus,(4) neither neural symptoms nor central disorders related to vertigo, and (5) no other causative disease directly related to vertigo. Only for the case which satisfies the above five conditions, definite diagnosis of positional vertigo of benign paroxysmal type should be made.
