inanition fever

thirst fe·ver

an elevation of temperature in infants after reduction of fluid intake, diarrhea, or vomiting; probably caused by reduced available body water, with reduced heat loss by evaporation; an analogous condition in adults is seen when exertion is continued in the face of dehydration.

inanition fever,

a temporary mild febrile condition of the newborn in the first few days after birth, usually caused by dehydration.