All questions about Fibromyalgia

Why are they fine one day and not the next?

Because fibromyalgia symptoms vary, with stress, sleep, the weather and how active someone has been, and often for no clear reason. A good day isn't proof it's over, and a bad day isn't a choice.

The full answer, with the sources, is in the guide.

Sources

• NHS: Fibromyalgia, symptoms
• Healthtalk.org (University of Oxford): Fibromyalgia, living with the symptoms: pain and fatigue
• Gomez-Arguelles, Moreno-Zazo and Maestu: Characterizing fibromyalgia flares, a prospective observational study (Reumatologia)
• Arthritis UK (formerly Versus Arthritis): Fibromyalgia

Reviewed 2026-11-07 · next review 2027-11-07