The Therapy Fibromyalgia and Chronic Fatigue Sufferers Wish They’d Tried Sooner

If you live with fibromyalgia or chronic fatigue syndrome (ME/CFS), you already know the cruel arithmetic: the more you push, the worse you feel, and rest never quite refills the tank. Widespread pain, bone-deep exhaustion, “fibro fog,” and broken sleep become the backdrop to everyday life – and conventional treatments often only take the edge off.

That’s why a growing number of people are looking at hyperbaric oxygen therapy (HBOT), and why one brain-imaging study in particular keeps coming up in the conversation.

Why oxygen enters the fibromyalgia picture

Fibromyalgia is increasingly understood as a disorder of central sensitisation – the nervous system amplifies pain signals – accompanied by abnormal activity in specific brain regions. Chronic fatigue syndrome shares overlapping features: persistent fatigue, post-exertional malaise, and cognitive difficulty, with evidence pointing toward problems in blood flow and oxygen delivery to tissues.

HBOT works by saturating the blood plasma with oxygen under pressure, allowing it to reach tissues that may be under-perfused. The theory is that this can help calm neuroinflammation and support the brain regions involved in pain processing. If the underlying mechanics are new to you, our guide to how HBOT chambers work is a helpful primer.

The study that put HBOT on the map for fibromyalgia

The landmark research is a prospective clinical trial published in PLOS ONE in 2015. Sixty women with fibromyalgia received a course of 40 HBOT sessions, and the results were striking: significant reductions in pain and improvements in quality of life – but crucially, the researchers also documented changes in brain activity on SPECT imaging that correlated with how patients felt. In other words, it wasn’t only people reporting they felt better; their brain scans changed too. You can read the full trial in PLOS ONE here.

That objective imaging data is what makes the study stand out in a field where so much rests on subjective symptom reports.

A note of honesty, though: this was a single-centre study with a moderate sample size, and it has not yet been replicated in large multicentre trials. The findings are genuinely encouraging, but they aren’t the final word – and HBOT is not an approved medical treatment for fibromyalgia or ME/CFS.

Pain, sleep, and the fatigue cycle

For many people, the symptom that quietly wrecks everything else is poor sleep. Unrefreshing sleep feeds pain, pain feeds fatigue, and fatigue feeds fog. Because oxygen plays a role in tissue repair and inflammation, some HBOT users report that better-quality sleep is among the first changes they notice – which can begin to loosen that cycle. 

It’s also worth setting expectations on timing. HBOT’s effects are cumulative; the fibromyalgia trial used 40 sessions for a reason. A realistic approach treats it as a steady, consistent practice rather than a quick fix – and our overview of how often HBOT is typically used can help you think through a sustainable routine.

Could a home chamber fit a chronic condition?

One of the practical barriers for people with fibromyalgia or ME/CFS is that travelling to a clinic dozens of times is exhausting in itself – sometimes self-defeating. That’s part of the appeal of mild home hyperbaric chambers (1.3–1.5 ATA): they let you do gentle, regular sessions without the energy cost of getting there. They’re designed for wellness and recovery support, not as a medical treatment, and they should complement – never replace – care from your healthcare team.

The bottom line: the evidence for HBOT in fibromyalgia is among the more interesting in the wellness space precisely because it’s backed by objective brain imaging, not just symptom diaries. It isn’t a cure, and it won’t work for everyone. But for a condition that so often leaves people feeling dismissed, it’s a research-backed avenue worth discussing with your doctor.

Frequently Asked Questions

Does hyperbaric oxygen therapy work for fibromyalgia?

A 2015 PLOS ONE trial reported reduced pain and improved quality of life in women with fibromyalgia after 40 HBOT sessions, with corresponding changes on brain imaging. However, the evidence is limited and HBOT is not an approved treatment. Discuss it with your doctor.

How is fibromyalgia different from chronic fatigue syndrome in this context?

The two conditions overlap heavily – both involve fatigue, cognitive difficulty, and disrupted sleep. HBOT research is more developed for fibromyalgia, but the proposed mechanism (improved tissue oxygenation and reduced neuroinflammation) is relevant to both.

How many sessions might be needed?

The main fibromyalgia study used 40 daily sessions. Because HBOT’s benefits build cumulatively, a structured course is typically explored rather than occasional single sessions. Your provider can help set a realistic plan.

Can I use a home hyperbaric chamber if I have fibromyalgia?

Mild home chambers (1.3–1.5 ATA) appeal to people who find frequent clinic trips draining. They’re intended for wellness and recovery support, not medical treatment, and should be used alongside your existing care.

Is HBOT safe for people with chronic pain conditions?

HBOT is generally well tolerated. The most common effects are mild ear or sinus pressure during pressurisation. People with certain lung or ear conditions should avoid it, so consult a healthcare professional first.

This article is for informational purposes only. Hyperbaric oxygen products are intended for wellness use and are not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare professional before beginning any new therapy.