The Science of Dehydration

Dehydration and Fever

Risk of Dehydration during a Fever

A fever can be caused by conditions such as the common cold, influenza, infections (viral and bacterial) or gastroenteritis. During a fever, it is likely that the patient (especially children) will consume less food and fluids, due to ill health. Lack of food and fluid intake can put the person at risk of developing mild dehydration.

Additionally, during a fever a person can experience fluid and electrolyte loss, through sweat. This can also contribute to the development of mild dehydration.

The combination of food and water deprivation, with moderate sweating can sometimes lead to mild dehydration.

It is important to monitor for signs and symptoms of dehydration during a fever.

Treating Dehydration due to Fever

Treatment of dehydration due to a fever is as follows:

Hydralyte electrolyte effervescent tablets, powders or ready-to-use solutions:

Age  Dosage
 Children (up to 13 years): Up to 4 x 400 mL doses daily, for up to 2 days, or as directed by a healthcare professional.
 13 years-Adult: Up to 7 x 400 mL doses daily, for up to 2 days, or as directed by a healthcare professional.

Hydralyte electrolyte ice-blocks:

Age Dosage
Children (up to 13 years): 1 x 200 mL dose daily or as directed by a healthcare professional.
13 years-Adult: Up to 2 x 200 mL doses for up to 3 days or as directed by a healthcare professional.

For dehydration due to fever, consult a healthcare professional for use beyond 24 hours.

Warnings

Please seek medical advice if*:

  • Fever persists for more than 3 days
  • Temperature rises above 40 degrees
  • Temperature without sweating
  • Unusual symptoms (such as hallucinations, neck stiffness, skin rash etc.)
  • Suffering from confusion and drowsiness
  • Condition is getting progressively worse with time

*This is not an exhaustive list. Please seek medical advice for further information.

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