What Does Dark Urine Feel Like With Heat Exhaustion?

Heat and sweating reduce the water available for urine, so the urine becomes more concentrated and darker. You may notice a stronger smell or pass smaller amounts. Dark urine can also have other explanations, including some medicines, foods, liver problems, or blood in the urine, so colour alone cannot identify the cause. Heat exhaustion often follows exertion or time in a hot environment and may leave you tired even after moving somewhere cooler.

Stop exertion and move to a cool, shaded or air-conditioned place. Loosen extra clothing and cool your skin with wet cloths or a fan. Sip water or an oral rehydration drink gradually if you are awake and able to swallow. Avoid alcohol and strenuous activity while recovering. Notice whether the urine becomes lighter as you rest and replace fluids; do not force large amounts quickly.

Seek urgent medical help for confusion, fainting, a seizure, severe weakness, trouble breathing, chest pain, inability to drink, repeated vomiting, or very hot skin with a change in alertness. These features can signal heatstroke or another emergency. Arrange prompt medical assessment if dark urine persists after cooling and drinking, or if you have severe muscle pain, very little urine, yellowing of the eyes, or pain when passing urine.

Ask what may be causing the colour, whether you need urine or blood testing, and how much fluid is suitable for you. Mention your heat exposure, medicines, medical conditions, urine output, and any vomiting or diarrhoea. Ask when it is safe to return to exercise and how to prevent another heat-related illness.