Can be considered by system/type or by the process in which excessive heat develops.
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Heatstroke – classical# or exertional*#
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Sepsis*
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Toxins – serotonin syndrome*, neuroleptic malignant syndrome*, malignant hyperthermia*, sympathomimetic overdose* (e.g., cocaine / MDMA), anticholinergics#
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Endocrine – hyperthyroidism/thyroid storm*, phaeochromocytoma*, adrenal insufficiency#
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CNS – meningitis*^, encephalitis*^, seizures*, ischaemia^, intracerebral haemorrhage^
*causes due to excessive heat production
#causes due to inadequate heat dissipation
^causes due to hypothalamic dysfunction
