There are several factors and common diseases that cause people to be cold and shivering but not feverish: 1. The most common factor is a serious infection that leads to septic shock, also known as infectious shock, which causes chills, pallor, decreased blood pressure, rapid pulse, decreased urine output, chills but no fever. 2. Being cold and shivering but not feverish is also caused by endocrine diseases, such as hypothyroidism and adrenocortical insufficiency. For example, hypothyroidism and adrenocortical insufficiency may cause shivering cold but not high body temperature. 3, prolonged drowning in cold water may also cause chills and shivering cold but no fever. 4, infections and connective tissue diseases may also cause shivering cold but no fever, or in cases of extremely low immunity. For example, in cases of tuberculosis, tumors, severe anemia, AIDS, etc.