![What Does a Fibromyalgia Flare-up Feel Like? What Does a Fibromyalgia Flare-up Feel Like?](https://www.epainassist.com/images/what-does-fibromyalgia-flare-up-feel-like.jpg)
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Thus, fibromyalgia flare-up means worsening in number and intensity of symptoms. It is observed that pain and fatigue generally become worse along with other symptoms too. Fibromyalgia flare-up can last for various time durations. For some, the fibro flare-up lasts for a day or two while others may experience it for several weeks or even months.