Signs of Heat Exhaustion
5. Headache
A headache is another common sign of heat exhaustion, but it is not the primary determiner. Headaches can occur for a number of reasons, from allergies to poor sleep. A minor headache without other symptoms is not necessarily cause for alarm. However, while a headache can be due to a number of underlying factors, it can be the result of dehydration or salt depletion.
When a headache is the result of heat exhaustion brought about by dehydration or salt depletion, it is not a minor ache. Instead, heat-related headaches are pounding and unrelenting. The lack of water in your system and the change in serotonin levels can trigger migraine-like symptoms. Again, the best treatment is to drink water and get to a cooler location, clear of direct sun rays.
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