“Fibromyalgia is a long-term condition that causes widespread muscle pain, fatigue and brain fog. It happens when your nervous system becomes more sensitive to pain signals. There isn’t a cure. But lifestyle changes, therapy and medication may help you manage flare-ups and improve daily life.

Research shows it involves changes in how your central nervous system processes pain. This system becomes more sensitive and amplifies pain signals. This means your body feels pain more strongly.

Symptoms often come and go in periods called flare-ups. There isn’t a cure, but treatment could help manage symptoms.”

Cleveland Clinic (Fibromyalgia: What It Is, Symptoms & Treatment)