of temperature increase there is a 10 beats/minute increase in heart rate. This, however, may not always
occur. Fever with relative bradycardia has a narrow differential diagnosis, usually infectious (including,
among others, salmonellosis and typhoid fever, brucellosis, legionellosis, mycoplasma pneumonia, and
meningitis with increased intracranial pressure), but possibly iatrogenic (like a drug fever) or simply the use
of digitalis or beta blockers.