what causes a dehydration headache
According to the Mayo Clinic, dehydration is what is known as a secondary headache: âa symptom of a disease that can activate the pain-sensitive nerves of the head.â Dehydration headaches occur when you lose a substantial part of the water and electrolytes that your body needs to perform normal functions.
If that fluid sack is depleted or running low because of dehydration, the brain can push up against parts of the skull, causing headaches. RELATED: 6 Unexpected Ways Eye Problems Can Hurt You. Some drinks that can cause dehydration include alcohol, energy drinks, and even caffeine as it has a slight diuretic effect.