Updated: 22 May 2020
Be careful to not mistake hyperthermia for fever.
A heat-stressed individual may also be ill (with mild to severe symptoms of overheating) and can potentially be mistaken as being febrile. Therefore, it is important that they are monitored until hyperthermia subsides. If symptoms persist, seek medical advice immediately.
If someone has been exercising and/or was exposed to heat, let him/her rest in a cool environment for at least 30 minutes. If body core temperature remains elevated during this time, it may be fever – consult a health expert immediately and explain the person’s condition. If you observe a substantial drop in body core temperature (of 0.5°C or more, towards the normal 37°C) and the individual feels better after resting in a cool environment, it is more likely to be heat-stress related. In this case, ensure that the individual is hydrated and has no other indications of COVID-19 infection.
Differential diagnosis between heat illness and COVID-19 is critical to facilitate accurate testing, diagnosis and treatment, and prevent contraindications of treatment.