Which of the following is NOT a category of heat injury?

Heat injuries are classified based on the severity of the symptoms and the body’s response to high temperatures. The three main categories of heat injury include heat cramps, heat exhaustion, and heat stroke, each representing a progressively more severe reaction to heat stress.

Heat cramps are often the initial symptoms of heat-related illness, characterized by painful muscle contractions typically due to dehydration and electrolyte loss. Heat exhaustion follows, with symptoms like heavy sweating, weakness, and dizziness, indicating that the body is struggling to cool down but has not yet reached a life-threatening state. Heat stroke is the most severe heat-related condition, where the body’s temperature regulation fails, potentially leading to organ failure and death if not treated immediately.

In contrast, cold shock does not relate to heat injuries at all; rather, it pertains to the body's response to sudden exposure to cold environments or water. This distinction clarifies that cold shock is not associated with the body's response to heat and thus falls outside the categories described for heat injuries. Understanding these distinctions is essential for proper treatment and prevention of heat-related illnesses.