The document discusses the evaluation and potential causes of dizziness in patients. It outlines important aspects of the history to obtain including triggers and associated symptoms. Acute causes mentioned include vestibular neuronitis which presents with sudden vertigo, nausea and vomiting that gradually improves over weeks. Recurrent episodic causes discussed are benign paroxysmal positional vertigo (BPPV), migraine, and Meniere's disease. Red flags are also noted that could indicate a posterior circulation stroke requiring further workup.