NCIt definition : A condition characterized by an abnormally high body temperature. In a hyperthermic
state, the hypothalamic set-point is normal but body temperature increases and overrides
the ability to lose heat, resulting from exogenous heat exposure or endogenous heat
production.;
Alternative definition : NICHD: Elevation of body temperature above normal due to the production or absorption
of more heat than the body is able to dissipate.; NCI-GLOSS: Abnormally high body temperature. This may be caused as part of treatment,
by an infection, or by exposure to heat.; FDA: An abnormally high body temperature. Not fever.;