NF01.1/T67.1 Heat syncope



Heat syncope is a condition caused by a sudden drop in blood pressure due to the body’s inability to cope with extreme heat. It is most common in hot and humid conditions, when the body is unable to cool itself efficiently. It is often accompanied by nausea, dizziness, sweating, and fainting.


Heat syncope is typically diagnosed based on an individual’s reported symptoms and physical exam. A doctor may also order lab tests to rule out other conditions such as dehydration, heart problems, and anemia.

Differential diagnosis

Differential diagnoses for heat syncope include dehydration, hypovolemia, anemia, cardiac arrhythmias, and orthostatic hypotension.


Treatment for heat syncope typically involves rehydration and rest. Other treatments may include cooling measures such as cold compresses, cooling showers, and air conditioning. Medications may also be prescribed to help reduce the risk of further episodes.


Heat syncope is a short-term condition that is generally treatable and reversible. However, if not treated timely and properly, it can lead to more serious complications. It is important to take steps to prevent heat syncope, such as avoiding hot and humid environments, wearing light and loose-fitting clothing, and drinking plenty of fluids.

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DISCLAIMER: Please note that all explAInations are generated by AI and are not fact checked by a medical professional. ICD ExplAIned do not assume liability for any injuries or harm based on the use of this medical information.