Feeling cold during heat exhaustion

Heat exhaustion follows substantial heat exposure and fluid or salt loss. Skin may feel cool, pale, or clammy while the person still feels unwell. Weakness, headache, dizziness, nausea, thirst, sweating, and dark urine can accompany it. Feeling cold does not rule out a heat-related illness: sweating and changes in blood flow can make the skin feel chilled. [Dehydration](/conditions/dehydration/) can worsen the problem, especially after exercise, prolonged outdoor activity, vomiting, or diarrhoea. [Heat Intolerance](/symptoms/heat-intolerance/) describes a different, recurring sensitivity to warmth and should be discussed separately.

Stop activity and move to a cool, shaded or air-conditioned place. Loosen extra clothing, use cool wet cloths or a fan, and give small frequent sips of water or an oral rehydration drink if the person is awake and able to swallow. Do not give alcohol, and do not leave them alone. Rest until symptoms settle and avoid returning to heat or strenuous activity that day. [Excessive Sweating](/symptoms/excessive-sweating/), [Excessive Thirst](/symptoms/excessive-thirst/), and [Dizziness](/symptoms/dizziness/) are useful terms to mention when seeking advice.

Call emergency services if the person becomes confused, faints, has a seizure, cannot drink, has trouble breathing, or remains very unwell after cooling. A very high temperature or hot skin with little or no sweating raises concern for heatstroke, which is an emergency. Get medical advice if vomiting prevents fluids, urine stays dark, or symptoms do not improve promptly. See [Heat Exhaustion](/conditions/heat-exhaustion/) for related warning signs and [Headache](/symptoms/headache/) if head pain persists.

How severe was the heat exposure? Could dehydration or another illness be contributing? How should I replace fluids safely? When can I return to exercise or outdoor work? What precautions fit my medicines and health conditions?