What is Fibromyalgia Flares? Think of your body as a computer. When you have fibromyalgia, it’s like the pain software has a glitch — it sends too many alerts to your brain, even when there’s no real damage. What is a Flare-Up? A flare-up is when symptoms suddenly get worse , often without warning. During a flare, you might feel like your whole body is on fire , your muscles ache intensely , and you’re exhausted even if you’ve done very little. It can last hours, days, or even weeks . During a flare-up, your body’s pain sensors go into overdrive . Everyday activities like walking, cleaning, or even talking can feel overwhelming. It’s like your body is sending out a “red alert” when there’s no real danger — and you can’t turn it off. What Causes Flare-Ups? Flare-ups can be triggered by things that stress the body or mind , like: • Overdoing it physically (e.g., cleaning the house or exercising too much) • St...