What causes low body temperature? Low body temperature (hypothermia) occurs when heat loss from the body is higher than heat produced in the body. It is most commonly caused by exposure to cold-weather conditions or cold water.

What does a subnormal body temperature indicate?

Subnormal body temperature can also be caused by certain medical conditions, including an infection. Hypothermia is a medical emergency in which the body temperature drops dangerously low, below 95° F (35° C).

Can a viral infection cause a low body temperature?

When you have an infection, your body's temperature usually rises as it tries to fight off the bug causing the infection. Interestingly, some people see their body temperature go down (hypothermia) instead of up.