 Chief medical officer and emergency room physician at Shady Grove, Dr. Neil Roy, says the hospital sees a variety of patients covering the spectrum of heat-related illnesses. Heat cramps, heat exhaustion, heat stroke, things like sunburn, or even patients that were outside walking, felt lightheaded, dizzy, and weak. Dr. Roy recommends drinking plenty of water and sports drinks, which include electrolytes, an important part of rehydration.