Self-limited
Provide muscle stretching and massage
Pain is difficult to treat
Often does not respond to opioids alone
Hydration
Mild symptoms: sports drinks
Severe symptoms: IV normal saline
Often does not respond to opioids alone
Mild symptoms: sports drinks
Severe symptoms: IV normal saline
Heat cramps
Nausea and vomiting 
Heat edema
Nausea and vomiting
Heat exhaustion
Constipation
Heat tetany
Constipation 