A fever can be caused by many medical conditions ranging from non serious to life-threatening.[11] This includes viral, bacterial and parasitic infections such as the common cold, urinary tract infections, meningitis, malaria and appendicitis among others.[11] Non-infectious causes include vasculitis, deep vein thrombosis, side effects of medication, and cancer among others.[11] It differs from hyperthermia, in that hyperthermia is an increase in body temperature over the temperature set point, due to either too much heat production or not enough heat loss.[6]