The Facts

According to the University of Maryland Medical Center, a heat stroke occurs when the body loses its normal ability to cool itself through sweat and heat radiation. The depletion of normal salt and moisture reserves creates the conditions for this eventual failure.

Initial Signs

Typically, heat stroke begins as heat cramps, a condition characterized by excessive sweating that begins the depletion process. Signs of the condition include pain and muscle spasms.

Escalation to Heat Exhaustion

Continued depletion of body fluids and salt can trigger heat exhaustion, the next step toward heat stroke. The Mayo Clinic cites signs of heat exhaustion that include dizziness, headache, cramps, and cool, moist skin.

Escalation to Heat Stroke

If left untreated, heat exhaustion can escalate to heat stroke. At this level, depletion of fluids and salt rob the body of its normal cooling abilities, which can lead to a body temperature of 104 degrees Fahrenheit or higher, as well as confusion, rapid pulse, hot and dry skin, hallucinations and unconsciousness.

Significance

Without immediate treatment, heat stroke can trigger severe consequences that include organ failure, permanent disability and even death.

Source:

University of Maryland Medical Center: Dehydration and Heat Stroke

Centers for Disease Control and Prevention: Extreme Heat---A Prevention Guide

Mayoclinic.com: Heatstroke Causes

More Information:

Mayoclinic.com: Heatstroke