Low body temperature may be related to illness. But it's often related more to the way the temperature is measured than to the health of the person.
Low body temperature may be associated with:
- Severe infection
- Certain medications or toxins (including alcohol)
- Hormonal disease (including underactive thyroid, pituitary or adrenal glands)
- Kidney failure
- Low blood sugar or malnutrition
- Neurologic (brain) disease
- Prolonged exposure to a cold environment
- A bad thermometer
- The person just had something cold to eat or drink
- The thermometer wasn't under the tongue
- The mouth was open
If you feel well and do not seem to be at risk for any of the diseases listed above, your temperature may be normal. Or, your low temperature may be normal for you. But if you have concerns, see your doctor. He or she will review any symptoms you may have, examine you and re-check your temperature. Depending on the findings, additional evaluation and treatment may be needed.