Know the difference between dehydration and heatstroke in summer
Samira Vishwas April 18, 2026 07:25 PM

Important information to protect from heat

New Delhi: The heat wave is increasing across the country, and every year many people lose their lives due to heat- illnesses. The symptoms of dehydration and heatstroke are often similar, causing people to get confused. However, there is an important difference between the two. Dehydration occurs due to lack of water, whereas in heatstroke the body temperature is not controlled. Recognizing the difference between the two at the right time can be life-saving.

Doctors say that if the symptoms are understood on time, serious problems can be avoided. It is important to pay attention to symptoms such as thirst, fatigue, skin conditions and mental changes. Heatstroke is a medical emergency, while dehydration can also be controlled with home remedies. Here are 6 important signs.

body temperature

In dehydration the body temperature remains normal or slightly increased. At the same time, in heatstroke the temperature rapidly rises above 40°C (104°F), which is a sign of failure of the body’s cooling system. In such a situation, it is necessary to immediately take it to a cool place and contact a doctor.


thirst and dryness of mouth

Dehydration causes excessive thirst, mouth becomes dry and saliva becomes sticky. Heatstroke can also cause thirst, but confusion, weakness and dizziness are also common. If thirst is accompanied by mental illness, it should be taken seriously.

change in mental status

Dehydration can cause irritability, fatigue, or headaches. Whereas in heatstroke, serious symptoms like confusion, loss of direction, difficulty in speaking or unconsciousness appear. A sudden change in mental status may be a sign of a heat emergency.

skin conditions

In dehydration the skin becomes dry and lifeless. In heatstroke the skin becomes hot, red and dry, sometimes it may even feel sticky. Abnormal skin condition is a serious warning sign.

heartbeat and breathing

Heart beat increases due to dehydration. In heatstroke the heartbeat becomes very fast and breathing can become difficult. These symptoms indicate immediate visit to the hospital.


important note

The information given here is based on general assumptions. This has not been confirmed. Be sure to consult your doctor before applying any information.

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