Reviewed by medical experts • For informational purposes only
Dehydration comes in three types - water and salt lost together, mostly water lost, or mostly salt lost - and they all teach one home rule: when sweat, diarrhoea or vomiting do the losing, replace electrolytes, not just plain water.
Doctors sort dehydration by what exactly was lost - water, salt, or both - because the type changes the right replacement.
The practical lesson is one line: when fluid loss involves sweat, diarrhoea or vomiting, replace salts too - not just water. Plain water alone is fine for ordinary thirst; it is not enough when the body is losing electrolytes.
Dehydration comes in isotonic (water and salt together - the diarrhoea pattern), hypertonic (mostly water lost) and hypotonic (mostly salt lost) forms - all pointing to one home rule: heavy losses need electrolyte replacement, not plain water alone.
Written By
Dr. Daksh
BDS
Reviewed By
Dr. Varun Gupta
MD Pharmacology, MBBS
Last updated on
27 Sep 2022 • 06:23 PM (IST)
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Dehydration is simple arithmetic - more water and salts leaving than coming in. Diarrhoea and vomiting, fever, sweating and plain not-drinking are the causes, with infants, the elderly and anyone in the summer heat running out of reserves fastest.
The definitive dehydration remedy was always a kitchen recipe: 6 level teaspoons of sugar plus half a level teaspoon of salt per litre, sipped steadily - plus nimbu-pani, chaas, coconut water and kanji. What works, how to drink it, and where remedies end.
Unrecognised severe dehydration is genuinely dangerous: shock, kidney injury, electrolyte seizures and heatstroke - with infants and the elderly crashing fastest. Every complication is prevented by one unglamorous act: replacing fluids and salts early.
Treating dehydration is matching response to grade: water for mild, ORS sipped all day for moderate, hospital IV fluids for severe - while treating the cause (diarrhoea, fever, heat) and re-feeding gently once the worst passes. The complete playbook.
Mild dehydration answers to water, moderate to actively-sipped ORS with a doctor's call for the vulnerable, and severe to hospital IV fluids without delay. The grades, their right responses, and the signs - confusion, fainting, a baby too weak to drink - where home care ends.
The classics gave morbid thirst entire chapters and answered it with salted rice gruels, coconut water and cooling drinks - the same fluid-and-salt logic as modern ORS. Where Ayurveda, the grandmother and the WHO genuinely prescribe the same drink.
