Vestibular migraine is an under-diagnosed but increasingly recognised neurological condition that causes episodic vertigo, associated with migrainous features. Making a diagnosis of VM relies on a clinical history, including the presence of recurrent episodes of vertigo or dizziness, on a background of migraine headaches, and associated migraine features that accompany the vestibular symptoms. It is the most common cause of spontaneous (non-positional) episodic vertigo, affecting up to 1% of the population, but remains under-diagnosed outside specialist centres, partly due to an absence of diagnostic biomarkers. Its pathophysiology remains poorly understood, and there is a paucity of high-quality treatment trials. Here we review the clinical features of vestibular migraine, highlight current theories that account for vestibular symptoms, and outline treatment guidelines.