Extreme stress can cause fibromyalgia symptoms. As stress builds up inside us, due to whatever reasons, one can suddenly experience a flare-up of fibromyalgia. Identifying fibromyalgia due to stress and dealing with it are both difficult.
A lack of sleep or a change in one's sleeping pattern can, over a period of time, cause fibromyalgia. Some believe that insufficient sleep can cause the body to decrease the production of Serotonin, a pain moderating neurotransmitter, hence resulting in increased pain sensitivity.