The perfect crime
A 27 year old woman presented to the emergency department with collapse, left sided weakness and loss of sensation, and amnesia. We got a history of the night's events before admission from her friends. She had no past medical history and was not known to be a recreational drug user.
On a night out to a club, she had consumed half a bottle of wine, two pints of Guinness, and five single measures of spirits. However, she was “not that drunk and quite alert.” After leaving for the toilet alone, she was later found sitting on a chair at the bar with her head on the tabletop. She seemed confused and did not recognise anyone. Her friends became concerned because she was difficult to arouse. They carried her outside and called an ambulance. She then passed out and became unresponsive for several minutes, but had no seizures, no abnormal movements, no incontinence, and did not bite her tongue.
She could not recognise her friends, did not know her own name, date of birth, or occupation. Nor could she remember her parents' names. However, she could recall her sister's name and occupation and a brother who apparently died some years ago