Which of the following is a serious consequence of untreated heat stroke?

Heat stroke is a severe condition that arises when the body's temperature regulation fails, leading to an elevated body temperature that can cause significant damage to internal organs and systems. Among the options given, experiencing confusion and potential unconsciousness is a serious consequence of untreated heat stroke.

As the body overheats, brain function may become impaired, leading to neurological symptoms such as confusion, disorientation, and even loss of consciousness. This can be critical, as it may prevent individuals from recognizing their condition or seeking necessary medical attention. The risk of complications increases significantly if heat stroke goes untreated, making this symptom particularly alarming.

In contrast, other options such as improved hydration levels or a quick recovery with rest inaccurately describe the situation. In cases of heat stroke, hydration typically needs to be restored through medical intervention rather than just rest and fluid intake. Increased blood pressure can occur due to stress, but it is not as directly linked to the acute consequences as confusion and unconsciousness, which indicate a more severe and immediate threat to life.