CPR First Aid

Can a Low Body Temperature Be Caused By Dehydration?

Low body temperature can be caused by dehydration, which may be caused by not drinking enough water. Learn how to prevent and treat low body temperature.

Drinking plenty of fluids is vital, especially in the summer when dehydration is more prone to occur. Many things are affected by dehydration. But what about body temperature? Can a low body temperature be caused by dehydration? We’ll learn the connection between the two in this blog article and offer advice on maintaining hydration.

What Is Dehydration?

When someone has a fluid loss that is higher than they consume, dehydration sets in. Drinking water and enough fluid are necessary for human life because it makes up two-thirds of the human body. The right amount of fluid is essential for the body’s function, digestion, lubricating the joints, and getting rid of toxins to improve dry skin.

Dehydration occurs when fluid loss exceeds intake. Adequate hydration vital for body function, digestion, joint lubrication, and skin health.

Dehydration Symptoms

According to healthdirect, they differentiate the signs and symptoms of dehydration whether it is moderate or severe. Here are the signs and symptoms.

If you have mild to moderate dehydration, you might:

  • be thirsty
  • have a dry mouth, lips, and tongue
  • have a headache
  • have dark yellow urine
  • be dizzy or light-headed, particularly when standing up
  • be experiencing muscle cramps when doing a physical activity or being in hot weather
  • babies have no wet diapers for 3 or more hours

Severe dehydration is life-threatening and needs immediate attention. Signs of severe dehydration are the following.

  • be extremely thirsty
  • have a very dry mouth
  • have sunken eyes
  • be breathing fast (Tachypnea)
  • have a weak, rapid heart rate
  • low blood pressure
  • have a fever
  • have little or no urine
  • be irritable, tired, or confused
  • cold, clammy skin (wet)
  • loss of consciousness
  • have a sunken soft spot on top of the head
  • have constipation
  • have rapid heartbeat

It’s best to seek advice from a healthcare provider once you see the above symptoms.

Can Dehydration Cause High Fever?

Dehydration can indeed manifest with symptoms that mimic those of a fever. When the body loses significant amounts of fluids, it can struggle to regulate its internal temperature properly. As a result, dehydration may cause the body to overheat, leading to symptoms such as a high body temperature, excessive sweating, and feeling feverish. In situations where dehydration is severe, the body’s ability to cool itself through sweating becomes compromised, exacerbating the sensation of heat and potentially causing a high fever.

Can a Low Body Temperature be Caused by Dehydration?

While dehydration is commonly associated with overheating, it can also lead to a decrease in body temperature, albeit less frequently. When the body lacks an adequate amount of fluids, it may struggle to maintain its core temperature within the normal range. 

This can result in a drop in body temperature. What does a low body temperature indicate? It can lead to symptoms such as shivering, cold extremities, and a general feeling of chilliness. Although less common than experiencing a high fever, a low body temperature can still indicate dehydration and should not be overlooked.

Other Things Dehydration Can Affect/Cause

Aside from fluctuations in body temperature, dehydration can have a myriad of effects on the body. Some of the additional consequences of dehydration include urinary and kidney disorders, heart problems, brain issues, complications with blood vessels, and a decrease in blood volume. 

Furthermore, severe dehydration can lead to life-threatening conditions such as kidney failure, electrolyte imbalances, and even loss of consciousness. It is essential to recognize the signs of dehydration promptly and take appropriate measures to prevent and treat it.

While dehydration is commonly associated with symptoms such as thirst and dry mouth, its effects on body temperature can vary. Dehydration can lead to both high fever and low human body temperature, depending on the severity of fluid loss and individual factors. 

Causes of Dehydration

Here are the usual reasons why people get dehydrated:

  • excessive sweating after strenuous exercise or physical activity, especially in hot weather
  • after severe vomiting or diarrhea
  • with a fever
  • after drinking too much alcohol
  • while taking certain medicines such as diuretics
  • as a complication of diabetes
  • if they don’t drink enough water
  • Anyone may become dehydrated, but babies, young children, older adults, and people with long-term illnesses are at the most risk.

Complications of Dehydration

If you do not have sufficient fluid intake or dehydration, the following health conditions may occur.

  • Urinary and kidney disorders (such as Kidney failure or kidney stones)
  • Heart problems
  • Brain issues
  • Complications with the blood vessels
  • Low in blood volume

Severe dehydration requires immediate admission to an emergency room.

People at Risk of Dehydration

Not only people who are exposed to the sun directly are at risk for dehydration. In fact, among the sportsmen who frequently experience the disease are bodybuilders and swimmers. As strange as it may seem, you can perspire while swimming. Swimming causes swimmers to sweat a lot.

Dehydration is more likely to affect some persons than others, including:

  • people working outdoors who are exposed to excessive amounts of heat (welders, landscapers, construction workers, and mechanics)
  • older adults
  • people with chronic conditions
  • athletes (especially runners, cyclists, and soccer players)
  • infants and young children
  • people who reside in high altitudes

Children and older adults should receive immediate treatment, even if they’re experiencing symptoms of mild dehydration.

Seek immediate medical attention if anyone of any age group exhibits any of the following symptoms:

  • severe diarrhoea
  • blood in the stool
  • diarrhoea for 3 or more days
  • inability to keep fluids down
  • disorientation

Dehydration risk extends beyond direct sun exposure; bodybuilders and swimmers can sweat profusely.

Treatment of Dehydration

Mayo Clinic says the only effective dehydration treatment is replacing lost fluids and electrolytes. The best approach to dehydration treatment depends on age, its severity, and its cause.

Use an over-the-counter oral rehydration solution for infants and kids dehydrated due to diarrhoea, vomiting, or fever. These solutions restore fluids and electrolytes by combining water and salt in a precise ratio.

Every one to five minutes, start with roughly a teaspoon (5 millilitres) and gradually increase as tolerated. For very young children, using a syringe could be simpler. Dilute sports drinks for older kids—mix 1 part water with 1 part sports drink.

Most individuals who experience mild to moderate dehydration due to diarrhoea, vomiting, or fever can get better by consuming more water or other liquids. Full-strength fruit juice and soft beverages may make diarrhoea worse.

Cool water is your best bet if you work or exercise outdoors during hot or humid weather. Electrolyte– and carbohydrate-containing sports drinks may also be beneficial.

Go Health Urgent Care, an American clinic, also states that a healthcare professional may prescribe intravenous drip to reverse severe dehydration. It contains fluid, salt, sugar like sodium chloride, and potassium to assist in quick rehydration.

Severely dehydrated children and adults should receive medical attention from emergency workers who arrive in an ambulance or a hospital emergency department. Intravenously administered salts and fluids have a quick absorption rate and hasten healing.

Prevention of Dehydration

According to EVERYDAYHEALTH, here are the ways to prevent dehydration: 

  1. Keep an eye out for any signs of dehydration.
  2. When thirst hits, respond to it by replenishing body fluid.
  3. Consume food that is high in water content (such as cucumbers, watermelon, and tomatoes)
  4. Check your urine colour for signs that you’re dehydrated.
  5. Examine the inside of your mouth for signs of dehydration.
  6. Be sure to increase your water intake when exercising and bring a water bottle.
  7. Drink more sips of water when you’re sick, have a high fever, or are in hot weather (to avoid heat exhaustion or heat stroke).
  8. Know if you’re in a high-risk group for dehydration.

Prevent dehydration with tips from EVERYDAYHEALTH.

Where to Study First Aid Tips

You can manage when someone has dehydration. You can better control it by identifying the symptoms and signs early. If you are interested in enrolling in a first aid course in Brisbane, contact CPR First Aid for more information.

CPR First aid courses and training are open to all since emergencies like dehydration complications can happen at any age, anywhere in Australia. HLTAID010 Provide an emergency first aid response is one of our popular courses. Contact us anytime for your queries.

RTO No. 21903: CPR First Aid was founded in 2007. We specialise in providing first aid training in CPR, asthma, and anaphylaxis for various workplaces, including childcare, schools, and other industries in NSW, VIC, SA, WA, and QLD. We are a Registered Training Organisation with the Australian Skills Quality Authority (No 21903). Our courses and Units are VET-accredited for workplaces in Australia.


It is unclear exactly how low body temperature and dehydration are related. Dehydration, on the other hand, is thought to make your body lose heat more quickly. Body temperature may decline as a result of this. Dehydration might also make it harder for your body to control its temperature. It implies that you could experience chilly even though the environment around you is warm. You should get medical help immediately if you suspect you may be dehydrated. Do not handle dehydration lightly. Get medical help as soon as possible if you experience any of the symptoms mentioned above. We are grateful for your time in reading this blog.



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