Heat stroke and heat exhaustion are heat-related conditions with varying severity. Heat exhaustion precedes heat stroke and occurs when the body is overwhelmed by excessive heat, causing heavy sweating, weakness, dizziness, and nausea. Moving to a cooler place, resting, and hydrating can prevent progression to heat stroke, a medical emergency marked by a dangerous rise in body temperature, no sweating, confusion, rapid heartbeat, and possible unconsciousness. Heat stroke requires urgent medical intervention. During heatwaves, check on vulnerable individuals and consult a health professional if needed. For advice, ask one of our Pharmacists.