Water can mean the difference between life and death. Sunstoke can be prevented by drinking plenty of water. Don't ever drink alcoholic beverages in the desert. It too can cause water loss. If you ever find someone who is suffering from dehydration, take them to the nearest shade, give them water, tend to their needs, and get help as soon as possible.
Snake bites are another concern in the desert.
If walking or camping in the desert, have a snake bite kit with you. Keep an eye out for snakes and steer clear of them. If you or anybody gets bit by a snake, keep yourself and the victim calm. Do not allow the victim to move around because it will cause the heart to beat faster, thus spreading the poison further. Get help as soon as possible.