Heat Stroke

Describes someone with a core temperature over 40 deg C who has Central Nervous System (CNS) effects (below) and may/may not still be sweating.  The CNS effects include irritability, confusion, hallucinations, unsteadiness and even seizures and coma.  This is a serious, life-threatening condition that requires management in hospital with intravenous fluid and electrolyte replacement and cooling.  Simple ways of cooling pre-hospital include evaporation (removing clothes, fanning, water spray, keep in shade) and ice-packing (eg. Groin and arm pits).  Another method is immersion eg. In a cool pond however this can be cumbersome, lead to shivering and risk drowning.