History A 56-year-old woman has been admitted to hospital after becoming drowsy and confused at work. Her daughter says that the woman has experienced several episodes of drowsiness and headaches which seemed to improve after meals. She has been rapidly gaining weight recently and has experienced intermittent palpitations. She has no medical history of note and is normally fit and well. Examination This woman feels cool to the touch. She is tachycardic with a heart rate of 100/min.
There are no other positive clinical findings. A finger-prick blood glucose test returns 1.2 mmol/L (normal range 3.5–7 mmol/L). What is the probable reason for this woman’s recurrent episodes of drowsiness and malaise? *This case is from Docplexus editorial team for educative purpose only. Source: 100 cases in Acute Medicine