As temperatures rise, recognizing the symptoms of heat exhaustion and heatstroke becomes increasingly important. Heat exhaustion occurs when the body overheats and struggles to regulate its internal temperature. A primary indicator is excessive sweating, accompanied by a feeling of being very hot and unwell, signaling a need to cool down rapidly.
Other symptoms associated with heat exhaustion can include headaches, dizziness, confusion, loss of appetite, nausea, and cramps in the limbs or stomach. Individuals may also experience rapid breathing or pulse, a body temperature of 38C (100.4F) or above, and intense thirst. Young children, who may not articulate their discomfort, might become listless or sleepy.
Heat exhaustion can develop quickly, sometimes within minutes, or more gradually over several hours. It can affect anyone, regardless of physical fitness, particularly after strenuous activity in high temperatures or prolonged sun exposure accompanied by alcohol consumption. Certain medications can also impair the body's ability to regulate temperature or increase susceptibility to sunburn, dizziness, and dehydration.
Heatstroke represents a more severe condition, often developing from untreated heat exhaustion. Signs of heatstroke include confusion, a lack of sweating despite high temperatures, and a body temperature exceeding 40C (104F). The skin may feel hot and dry. Nausea, vomiting, loss of consciousness, convulsions, or seizures can also occur.
Prompt recognition and action are vital for managing heat-related illnesses. If heat exhaustion is suspected, the individual should be moved to a cooler environment, their clothing loosened, and efforts made to cool them down with water or a damp cloth. They should be encouraged to drink water if conscious and able to swallow. If symptoms worsen or do not improve within 30 minutes, or if heatstroke is suspected, immediate medical attention should be sought.
Preventative measures during hot weather include staying hydrated by drinking plenty of fluids, avoiding excessive alcohol, wearing lightweight and loose-fitting clothing, and seeking shade or cool environments whenever possible. Pacing strenuous activities and taking frequent breaks are also recommended.