Final answer:
Shivering is not a symptom of heat stroke; it is a response to cold. Heat stroke symptoms include nausea, headache, and confusion. Shivering occurs when the body needs to generate heat, not when it is overheating.
Step-by-step explanation:
All of the following conditions are symptoms of heat stroke, EXCEPT shivering. Symptoms of heat stroke typically include nausea, headache, and confusion. Shivering is actually a response to cold, as it is the body's way of generating heat through muscle activity. Heat stroke occurs when the body's temperature regulation fails and body temperature rises to dangerous levels. In contrast to cold exposure where shivering is common, heat stroke leads to an inability to cool down, which can result in the absence of shivering.