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.
Heat exhaustion is a heat-related illness and occurs when the body gets too hot. Heat exhaustion occurs due to dehydration and loss of electrolytes through the skin. Skin types can range from oily to dry, extreme dryness accompanied by rashes and itching can often denote the presence of a skin problem or skin disorder.