If calcium levels are low and PTH levels are normal or low, then PTH is not responding properly and the person tested probably has hypoparathyroidism. Hypoparathyroidism is a failure of the parathyroid glands to produce sufficient PTH.
Heat exhaustion definition and facts. 1  Heat exhaustion is one part of the spectrum of heat-related illnesses that begin with heat cramps, progresses to heat exhaustion, and finally to heat stroke.  The body cools itself by sweating and allowing that sweat to evaporate.
First aid treatment for heat exhaustion includes recognizing the symptoms, stopping the activity, and moving to a cooler environment. Rehydration with water or a sports drink is the cornerstone of treatment for heat exhaustion. Complications of heat exhaustion include nausea, vomiting, dehydration and muscle weakness. If the activity is not stopped and the person left in a hot environment, there can be progression of symptoms to heat stroke, a life threatening emergency. Heat exhaustion can be prevented by being aware of your environment, especially on hot, humid days, and drink lots of fluids (no alcohol or caffeine).