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Other rare causes of hyperthermia include thyrotoxicosis and an adrenal gland tumor, called pheochromocytoma, both of which can cause increased heat production. [2] Damage to the central nervous system from brain hemorrhage, traumatic brain injury, status epilepticus, and other kinds of injury to the hypothalamus can also cause hyperthermia. [2]
Hyperthermia and fevers are defined as a temperature of greater than 37.5–38.3 ... and water temperatures near freezing can cause death in as little as 15 minutes. [37]
Heat stroke or heatstroke, also known as sun-stroke, is a severe heat illness that results in a body temperature greater than 40.0 °C (104.0 °F), [4] along with red skin, headache, dizziness, and confusion. [2]
Space heaters also have a hidden hazard: They can cause overheating — aka hyperthermia — especially in kids, people with disabilities and older adults who may have difficulty leaving a room ...
Malignant hyperthermia is diagnosed on clinical grounds, but various laboratory investigations may prove confirmatory. These include a raised creatine kinase level, elevated potassium, increased phosphate (leading to decreased calcium) and—if determined—raised myoglobin; this is the result of damage to muscle cells.
The cause of postmortem caloricity varies depending on the cause of death: Postmortem glycogenolysis – a phenomenon beginning soon after death observed in nearly all cadavers. In an average adult, postmortem glycogenolysis can produce up to 140 calories of heat which can raise the temperature of the body by up to 2 °C.
"Too many people are dying from heart disease and from stroke, which remains the fifth leading cause of death." The report also detailed the prevalence of specific risk factors for heart disease.
In humans, DNP causes dose-dependent mitochondrial uncoupling, causing the rapid loss of ATP as heat and leading to uncontrolled hyperthermia—up to 44 °C (111 °F)—and death in case of overdose. Researchers noticed its effect on raising the basal metabolic rate in accidental exposure and developed it as one of the first weight loss drugs ...