Head trauma is the most frequent cause of benign paroxysmal positional vertigo (BPPV) in patients younger than 50 years, and finding the aetiology of post-traumatic dizziness can be challenging. This case report presents a 45-year-old male patient suffering from positional dizziness after head trauma. He was diagnosed in a reposition chair, after manual manoeuvres had failed to provide the diag-nosis. The role of a reposition chair in diagnosing post-traumatic BPPV has not been demonstrated before, and this case illustrates, how the chair can help to clarify the diagnosis.