Back to resources

Understanding symptoms

Fibromyalgia presents differently in every person. Here is what we know about the most common symptoms — and why they can be so hard to explain to others.

Fibromyalgia is a long-term condition characterised by widespread pain and tenderness throughout the body. But pain is rarely the whole picture. Most people with fibromyalgia experience a cluster of symptoms that can shift in intensity from day to day, making the condition particularly difficult to manage — and to communicate.

Widespread pain

The most defining feature of fibromyalgia is persistent, widespread pain that affects muscles, joints, and soft tissue across the body. It is often described as a deep ache, burning, or stabbing sensation. The pain may be constant or come in waves, and is frequently worse after physical activity, stress, or poor sleep.

Fatigue

Fatigue in fibromyalgia goes far beyond ordinary tiredness. Many people describe it as a bone-deep exhaustion that does not improve with rest. It can make even simple tasks feel overwhelming, and often fluctuates unpredictably throughout the day.

Cognitive difficulties (fibro fog)

Often called 'fibro fog', cognitive symptoms include difficulty concentrating, memory lapses, slowed thinking, and trouble finding words. These symptoms can be just as disabling as the physical pain, and are frequently misunderstood by others.

Sleep problems

Disrupted sleep is extremely common in fibromyalgia. Many people find it difficult to fall asleep, stay asleep, or feel refreshed after sleeping. Poor sleep in turn worsens pain and fatigue, creating a difficult cycle.

Heightened sensitivity

People with fibromyalgia often experience heightened sensitivity to touch, temperature, light, and sound. This is sometimes called central sensitisation — the nervous system becomes amplified in its response to stimuli that would not normally cause pain or discomfort.

Headaches and migraines

Frequent headaches and migraines are reported by many people with fibromyalgia. These may be tension-type headaches or full migraines, and can significantly affect quality of life.

If you recognise these symptoms in yourself, you are not imagining them. Fibromyalgia is a recognised medical condition, and your experience is valid.

FibroSupport UK

A safe, compassionate space for those living with fibromyalgia — because you deserve to feel understood.

Support

If you are in crisis, please contact:

Samaritans: 116 123

Available 24 hours a day, 7 days a week.

© 2026 FibroSupport UK. All rights reserved.

You are not alone. You are believed.