What causes the body to be shivering one minute then sweating the next but does not have a fever?

Shivering followed by sweating can occur due to several factors, including rapid changes in body temperature regulation, often linked to nervous system responses. This can be triggered by conditions like anxiety, hormonal fluctuations, or even after intense physical activity. Additionally, certain medical conditions, such as hyperthyroidism or infections without a fever, may also cause these symptoms. It's important to consult a healthcare professional if these symptoms are persistent or concerning.