In
Medicine , is an excessive and unusual elevation of body
Temperature above 107.6°
F (42° C), or high
Fever (also called a ''hyperthermia'').
Some of the more common causes of hyperpyrexia include:
- excessive exposure to Heat or the Sun (also called ''heat hyperpyrexia'', a part of Heatstroke )
- Septicemia (a generalized bacterial infection of the Blood )
- some Viral Infections , such as Mononucleosis
- a thyrotoxic crisis (in Hyperthyroidism )
- Malignant Hyperpyrexia (or Malignant Hyperthermia ) is a particular condition caused by the breakdown of Muscle following its over-excitation, in response to certain stimuli, such as extreme Exercise (especially in a high ambient temperature), intense and prolonged Convulsions , Anesthesia , Fever or some Drugs , such as Cocaine , Alcohol and Aspirin . Malignant hyperpyrexia is accompanied by abnormal Heart rhythms ( Cardiac Arrhythmia ) and Kidney Failure . The susceptibility to malignant hyperthermia is an Autosomal dominant Inherited Trait . It is often noted for the first time during a general anesthesia, whereas the patient develops hyperpyrexia and muscle rigidity. Muscle tissue is rapidly destroyed by the hyper-rigidity ( Rhabdomyolysis ) and the break-down products damage the Kidneys , leading to renal failure. A dark colored Urine is produced in consequence. It can be fatal if not treated rapidly.
