What does Illness, heat-related mean in medical term?

Illness, heat-related means: The body’s reaction to excessive sweat loss and heat exhaustion, is called heat exhaustion. People who work in hot environments, elderly persons and those with high blood pressure are most at risk of heat exhaustion.
(in Medical Dictionary)

What else does Illness, heat-related mean?

Hot syncope is sudden dizziness and fainting that occurs after exercise in high heat. Although the skin may appear pale or sweaty, it is usually cool and moist. Your pulse might be weaker and your heart rate may increase. Normal body temperature.
(in Medical Dictionary)

Heat exhaustion is a sign that your body has become too hot. A person might feel thirsty, dizzy, uncoordinated or nauseous. Normal body temperatures are normal. The pulse can be normal or elevated. It is cold and clammy. Heat exhaustion is often caused by the loss of salt and water in the body. Salt supplements should be prescribed only after a physician has advised.
(in Medical Dictionary)

When the body is unable to regulate its temperature, it’s called heat stroke. Heat stroke occurs when the body has difficulty cooling down because its temperature increases rapidly. Within a matter of minutes, the body temperature can rise up to 106 degrees Fahrenheit or more. If emergency care isn’t given, heat stroke could result in permanent disability or death.
(in Medical Dictionary)

Heat-related Illness: If you experience symptoms such as headaches, nausea and fatigue from heat exposure, it is likely that you have some heat-related illness. You need to know the differences between heatstroke, which is a very severe condition and other heat-related diseases. Anyone experiencing these symptoms needs to see a doctor.
(in Medical Dictionary)

Heat Stress: This is when the body experiences heat stress.
(in Medical Dictionary)

After strenuous exercise, heat cramps are painful muscle spasms that cause pain in the legs, abdomen and arms. The pulse is either normal or slightly elevated, and skin tends to be moist and cool. The body temperature is generally normal. The most common cause of heat cramps is a deficiency in salt. However, a doctor should advise against replacing salt.
(in Medical Dictionary)