A 45-year-old female patient presents with recurrent episode…

A 45-year-old female patient presents with recurrent episodes of vertigo lasting less than one minute each. The episodes are triggered by specific head movements, such as rolling over in bed or looking up. The patient also reports associated nausea and nystagmus during the episodes. On examination, you observe horizontal nystagmus that is elicited by a Dix-Hallpike maneuver. Based on this clinical presentation, what is the most likely diagnosis?