With the expected heat wave, health experts want you to know about two heat related health issues. Both heat exhaustion and heat stroke are possible when temperatures and humidity are high. Symptoms of heat exhaustion include muscle cramps, uncontrollable sweating, headache and rapid heartbeat. The next level is heat stroke. According to the Centers for Disease Control, symptoms of heat stroke include: High body temperature (103F or higher) Hot, red, dry, or damp skin. Fast, strong pulse.