Swelling in the face and body, combined with feeling cold, may be more alarming, especially for those who are managing their thyroid issues. These signs can be due to water accumulation or hormonal fluctuations. It is extremely crucial to keep an eye on these changes closely. I advise you to make sure that you are drinking enough water and get a good and nutritious diet. Notwithstanding the emergence of the signs recently, it is better for your sister to visit the healthcare expert. The doctor will carry out a physical examination to assess the status of her treatment and decide whether or not to make suitable changes. The guidance of professionals will contribute to her safety and help her deal with any potential issues in the best possible way.