Diagnosis: meningococcal septicaemia.
Bloods sent for FBC, glucose, biochemistry, U&E, clotting.

15 year old  boy non-specifically unwell for a day.  Woke with a widespread purpuric rash and taken straight to hospital.

(click for larger graph)

ED assessment:
Temp 39.0, HR 120, RR 20, BP 90/60.
Alert no meningism; purpuric rash spreading.