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.
Signs of heat exhaustion. Heat exhaustion is the most common form of heat illness during athletic competition. This is caused due to high temperatures, humidity and heat index. This high heat stress increases core body temperature in the body. If left untreated, it can lead to heatstroke. Symptoms of heat exhaustion may include: