Symptoms of heat stress include:

• A. All of the above
• B. Headaches
• C. Dizziness
• D. Upset Stomach

Answer: (A)

Heat stress happens when the body's cooling system can't keep up in hot conditions, especially during physical work. Symptoms can show up in several ways, and headaches, dizziness, and upset stomach are all common parts of that picture. Headaches often arise from dehydration and electrolyte imbalance; dizziness can come from reduced blood volume and lower blood pressure as the body diverts blood to the skin for cooling; upset stomach can result from dehydration and decreased blood flow to the gastrointestinal tract. Because heat stress can present with more than one symptom at the same time, the best choice is the one that includes all of these signs. If you notice any of them, stop work, move to a cool, shaded area, drink water or an electrolyte beverage, and rest. Seek medical help if symptoms persist or worsen.