Case presentation A 17-year-old girl is admitted to the emergency department complaining of severe vertigo. This has developed over the past few hours; previously, she was well. She has the sensation of her surroundings spinning around her. She feels nauseous and sleepy but doesn’t have a headache. Her father has epilepsy and takes anticonvulsants. Her father indicated that she was concerned about her upcoming school exams. Examination She is drowsy, and her speech is slurred.
Her pulse rate is 64/min, her blood pressure is 90/70 mmHg, and respiratory rate is 12/min. Examination of her cardiovascular, respiratory, and abdominal systems is otherwise normal. Her peripheral nervous system examination is normal, apart from impaired coordination in both arms and legs and a staggering gait. Fundoscopy is normal. Her pupils are equal and reacting. There is a normal range of eye movements, but…
