Which of the following is a sign of heat stroke?

Loss of consciousness is a significant sign of heat stroke, a serious condition that occurs when the body overheats and can no longer regulate its temperature. This medical emergency may arise when the body's temperature rises above 104 degrees Fahrenheit (40 degrees Celsius). During heat stroke, the individual may exhibit symptoms such as confusion, rapid heart rate, and altered mental status, which can include loss of consciousness. This symptom is critical because it indicates severe physiological distress and potential life-threatening consequences if immediate treatment is not provided.

In contrast, other symptoms such as slow breathing, pale skin, or excessive shivering are not typically associated with heat stroke. Slow breathing may indicate other medical issues, pale skin is more often associated with shock or low blood circulation in response to heat, and excessive shivering can actually indicate a drop in body temperature, which is contrary to the elevated temperatures seen in heat stroke. Therefore, recognizing loss of consciousness as a sign of heat stroke is essential for timely intervention and treatment to prevent further complications or fatalities.