Definition- Sudden, temporary loss of consciousness.  This is most likely to occur in an athlete involved in prolongs physical exertion in warm weather.

Signs & Symptoms-

• Skin that is pale, cold and sweaty
• Sudden lightheadedness
• Blurred vision
• Nausea
• General weakness, then unconsciousness
• Rapid heartbeat (100-120 beats per minute) and rapid breathing.

• Pooled blood in the extremities caused by a long run.
• Prolonged straining, such as from heavy lifting, forceful coughing, etc.
• Sudden emotional stress.
• Standing after squatting
• Hot, humid weather
• Low blood sugar
• Heartbeat abnormalities
• Heart diseases that limit the amount of blood the heart pumps.
• Anemia

Possible Complications-

• Injury while fainting
• Mistaking cardiac arrest for fainting

• If someone faints, check for breathing and a neck pulse. If neither is present, call 911 and begin CPR.
• If you feel faint, sit down immediately and bend over or lie down.