It's possible for anxiety to cause physical symptoms, including chills or a feeling of coldness. Anxiety can trigger the body's "fight or flight" response, leading to various physical sensations and reactions.
When you experience anxiety, your body releases stress hormones, such as adrenaline, which can cause changes in blood flow, muscle tension, and other physiological responses. These changes might be responsible for the chills you are experiencing.
However, it's crucial to note that chills can also be associated with various other medical conditions. Since you mentioned that you have already seen doctors and undergone tests without a clear diagnosis, it might be a good idea to seek a second opinion or consult with a specialist, such as a neurologist or a rheumatologist, to explore other potential causes.
In the meantime, you can try some stress-reducing techniques, such as deep breathing exercises, meditation, or mindfulness practices, which might help alleviate some of the anxiety symptoms. It's essential to discuss your symptoms and concerns with a qualified healthcare professional who can provide you with personalized advice and a proper evaluation. They can rule out any underlying medical conditions and determine whether anxiety is a contributing factor to your symptoms.