A 24-year-old woman is brought to the emergency department after drinking approximately 8 L of water during a long-distance event. She is drowsy and has a serum…

A 59-year-old man suddenly develops difficulty speaking and weakness of the right arm while driving. His wife reports that, immediately beforehand, the right si…

A 63-year-old woman has three sudden episodes over two days of dizziness followed by double vision, slurred speech and veering to the left; each episode lasted…

A 44-year-old woman develops a severe headache while lifting her young child; she says it was already unbearable before she could put the child down. She has vo…

A 41-year-old woman presents with sudden right arm weakness and difficulty speaking. Her partner saw rhythmic jerking of the right hand for 90 seconds followed…