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What are Dehydration Headaches?

Laura M. Sands
Laura M. Sands

Dehydration headaches are a sign that the body is being deprived of the fluids needed to function at a healthy level. Experts warn that symptoms of dehydration should not be ignored as they may lead to more serious symptoms and conditions. Besides dehydration headaches, individuals operating on low hydration levels may experience life-threatening symptoms affecting the heart and other organs.

Anytime an individual has been ill and has recently experienced a high fever, as well as diarrhea or vomiting, this person has also suffered a loss of valuable bodily fluids. This person will most likely experience dehydration headaches if he or she does not drink replenishing fluids while convalescing. Children who do not yet understand the importance of replenishing fluids may refuse to eat or drink when nausea or loss of appetite occurs due to illness. Doctors and other health experts, however, insist that parents must give a child plenty of fluids to avoid dehydration headaches and other related symptoms.

Drinking water can help with dehydration headaches.
Drinking water can help with dehydration headaches.

Besides headaches, symptoms of dehydration include dry mouth, an inability to produce tears, lethargy, muscle fatigue, muscle soreness and very little or nonexistent urine output. Although an underlying illness causing nausea may also be the possible cause of dehydration, the state of being dangerously low in water and bodily fluids can also produce vomiting and diarrhea. On top of dehydration headaches and other symptoms, dehydration that is allowed to persist eventually results in low blood pressure, a rapid heart rate, fainting and an increase in the likelihood of a person going into shock as a result of all of these symptoms.

Dehydration symptoms often mirror heat exhaustion symptoms.
Dehydration symptoms often mirror heat exhaustion symptoms.

Heat exhaustion symptoms are also closely related to dehydration effects. These symptoms occur as the result of being exposed to extremely hot temperatures for a prolonged period of time. As a result, sweating, pale skin, extreme thirst, muscle cramps, stomach cramps, fainting and headache are likely to occur. If symptoms are ignored, a person suffering heat exhaustion may suffer heat stroke, which may result in a heart attack. Heat exhaustion may also lead to seizures or a person may lapse into a coma.

Dehydration may cause headaches.
Dehydration may cause headaches.

Dehydration headaches are among the earliest signals that bodily fluids are getting dangerously low. Other early signs of dehydration include irritability and confusion. Hydrating with water at this stage can often reverse symptoms and prevent the condition from worsening and affecting other organs, which will begin a slow and painful process of shutting down if dehydration is not immediately and properly treated.

Discussion Comments

bear78

@simrin-- Morning headaches can have various causes. Dehydration can definitely be the reason. You should drink at least eight, eight ounce glasses of water everyday.

If you drink alcohol, coffee or take diuretic medications, you need to drink more water to make up for the water that is lost.

It can also be beneficial to drink electrolyte water because dehydration usually also means loss of electrolytes.

SteamLouis
Sometimes I wake up with a headache. Could it be due to dehydration?
bluedolphin

This explains why I had the most terrible headache the day after I had food poisoning!

I had vomited a lot and I tried to drink water to make up for it but I guess it wasn't enough. The whole next day, I couldn't lift my head. I had a terrible, pulsating headache.

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    • Drinking water can help with dehydration headaches.
      By: violetkaipa
      Drinking water can help with dehydration headaches.
    • Dehydration symptoms often mirror heat exhaustion symptoms.
      By: roboriginal
      Dehydration symptoms often mirror heat exhaustion symptoms.
    • Dehydration may cause headaches.
      By: Maridav
      Dehydration may cause headaches.
    • Doctors recommend that parents give children plenty of water in order to avoid dehydration headaches.
      By: Darren Baker
      Doctors recommend that parents give children plenty of water in order to avoid dehydration headaches.
    • Particularly during hot weather, drink plenty of water throughout the day to prevent headaches that stem from dehydration.
      By: fotum
      Particularly during hot weather, drink plenty of water throughout the day to prevent headaches that stem from dehydration.
    • Intense workouts cause the body to sweat heavily and lose electrolytes as well as water.
      By: geronimo
      Intense workouts cause the body to sweat heavily and lose electrolytes as well as water.
    • Severe cases of heat exhaustion can result in coma.
      By: Monkey Business
      Severe cases of heat exhaustion can result in coma.
    • A severe dehydration headache can sometimes be accompanied by stomach cramps.
      By: Dragos Iliescu
      A severe dehydration headache can sometimes be accompanied by stomach cramps.
    • Some medications taken by the elderly can lead to dehydration.
      By: Sandor Kacso
      Some medications taken by the elderly can lead to dehydration.
    • Dehydration can cause fatigue.
      By: Brian Jackson
      Dehydration can cause fatigue.