The combination of hot summer sun and carelessness can have devastating consequences. The temperature readings for the light colored vehicle with partially open windows were much higher than previously reported. Increase in interior car temperature by minutes in the sun. New Orleans, July 1995. Early recognition of heat illness is imperative.
Heat exhaustion occurs when heat stress causes fluid depletion.
The signs of heat exhaustion include profuse sweating, headache, dizziness, nausea, vomiting, muscle weakness, and visual disturbances. If left untreated, heat exhaustion can lead to heat stroke. The primary causes of heat stroke vary with age. The most common cause of heat stroke in adults is strenuous exercise. Heat stroke occurs more readily in infants who are ill or have other predisposing conditions such as congenital nervous system abnormalities.