What are the signs and symptoms of heat stroke?

The signs and symptoms of heat stroke include red, hot skin and an absence of perspiration, making this option the most accurate. In heat stroke, the body’s temperature regulation fails, leading to an inability to sweat despite the body's core temperature rising to dangerous levels. As a result, the skin often appears flushed and feels hot due to the lack of cooling from sweat.

This condition is a medical emergency, and recognizing these signs is vital for prompt treatment. The absence of sweating is a key differentiator from other heat-related illnesses, such as heat exhaustion, which typically presents with profuse sweating and pale, clammy skin. The other options describe symptoms associated with different heat-related illnesses or conditions that do not specifically signify heat stroke.