Which measure is inappropriate for treating heat stroke?

Immersing a person in very cold water can be inappropriate for treating heat stroke because it may lead to rapid cooling, which can cause the body to go into shock. The temperature drop should be managed gradually to avoid complications. Heat stroke causes the body to lose its ability to regulate temperature, so rapid changes can shock the system and potentially lead to hypothermia or cardiovascular issues.

In contrast, other measures such as encouraging fluid intake, using ice packs on key areas of the body (like the neck, armpits, and groin), and removing excess clothing are considered appropriate because they help cool the individual more gradually and safely. This approach addresses the core issue of hyperthermia while minimizing the risks associated with sudden temperature changes.