Hypothermia , is a condition where a person has a core body temperature less than 95 degrees F or 35 degrees C.
Sometimes, without any symptoms, an individual has a low body temperature. This should not be ignored. It indicates , some underlying cause. The cause can be-
1. Hormonal abnormalities like -thyroid, adrenal, pituitary disorders.
2. Diabetes and other hormonal diseases.
3. Overwhelming infection and sepsis.
The diagnosis of hypothermia is done with-a special rectal thermometer as the Oral or ear temperatures are not accurate in very cold patients. So , doctor should check through rectal temperature.
Most likely, in your case, Thyroid and diabetes, are the causes for low body temperature.
.The treatment should be advised , only after clinical evaluation and blood work.
Please see doctor , for the clinical diagnosis and management.