15th February 2025

A 33-year-old man is brought to the Emergency department.

A 33-year-old man is brought to the Emergency department. He is behaving strangely, looking around suspiciously at staff and other patients. On examination, he is sweating profusely despite the comfortable environmental temperature, has dilated pupils and the following observations:

HR 110, BP 140/100, RR 16, Sats 96% (room air), temperature 38.7℃

He has no previous medical history.

What is the most likely cause?

Select the SINGLE most appropriate option from the list below. Select ONE option only.