When you feel stressed, your body becomes tense. This muscle tension can increase your pain if you suffer from fibromyalgia. The increased pain can make you feel helpless and frustrated because it may limit your abilities. This can cause you to become depressed. A cycle of stress, pain, limited/lost abilities, and depression may develop. If you understand how your body reacts physically and emotionally to stress and learn how to manage your stress, you can help break that destructive cycle.
(Source: Your Personal Guide to Living Well with Fibromyalgia – An Official Publication of the Arthritis Foundation.)