It's easy to ignore the first signs of dehydration while you're caught up in the thrill of the chase, but if untreated, dehydration can lead to a serious medical emergency in the field. It's absolutely critical to maintain hydration and keep water with you always, as dehydration can occur in any weather conditions, not just during periods of high heat. According to the Mayo Clinic (www.mayoclinic.com), the initial signs of dehydration are familiar to most of us: dry, sticky mouth; thirst; tiredness; headache; dizziness; and constipation. Once the dehydration becomes severe, though, look for symptoms that include low blood pressure, irritability, and confusion in adults, a lack of sweating, rapid breathing and heartbeat, sunken eyes, no urination, fever, and other signs. In the most severe cases, delirium, unconsciousness, and death may result.