The Fibro Guy Logo Black
The Fibro Guy Logo Black
Consultation

Restless Legs Syndrome and Fibromyalgia, Hypermobility and EDS: What the Evidence Actually Says

a pair of legs laid on a bed
Adam Foster
Latest posts by Adam Foster (see all)

If you’re reading this, there’s a good chance you already know the feeling of restless legs. It’s late, you’re finally still, the day has taken everything it was going to take, and then your legs start acting up. That crawling, pulling, can’t quite describe it sensation that only settles when you move, so you move, and the moment you stop it comes back. On top of fibromyalgia or hypermobility, which have already made a mess of your sleep, it feels almost unfair. Like your body found one more way to keep you awake.

It has a name. Restless legs syndrome, also called Willis Ekbom disease, and it is far more common in people like you than in the general population. That’s not a coincidence, and it’s not in your head despite what some may tell you. There are real, documented reasons these conditions travel together, and there’s a genuinely better treatment map than there was even just two years ago.

We’re going to go through what restless legs actually is, why it clusters with fibromyalgia so strongly, what the much thinner evidence says about hypermobility and EDS, and the iron story done properly, because almost everyone gets that bit wrong. Then we’ll get into some of the uncomfortable parts: some of the medications you might already be taking for pain or sleep can quietly make restless legs worse, while one of them is actually a recommended treatment for it. And we’ll finish with what the current evidence says actually helps.

What restless legs actually is, and what it isn’t

Restless legs gets thrown around as a phrase for any old twitchy, achy legs at night, but it’s actually a specific diagnosis with five criteria, and all five have to be met [1]. There’s a handy way to remember them, the mnemonic URGES [2]. Urge to move the legs, usually with an unpleasant or uncomfortable sensation. Rest brings the symptoms on or makes them worse. Getting up and moving relieves them, at least while you keep moving. Evenings and nights are when they show up or get worse. And Secondary causes have to be ruled out first [1][2].

That last one matters far more for you than for most people. The fifth criterion exists specifically to separate real restless legs from the things that mimic it, and the list of mimics reads like a greatest hits of fibromyalgia and hypermobility complaints: leg cramps, aching from being in one position too long, venous problems, arthritis pain [1]. So a proper diagnosis isn’t just ticking the “my legs feel weird at night” box. It’s checking that what you’ve got is genuinely restless legs and not one of the many other reasons your legs might play up. You don’t need a sleep study to be diagnosed either. Those involuntary leg jerks people associate with restless legs, the periodic limb movements, are a supporting clue but they’re neither necessary nor enough on their own, and the diagnosis is made on the history [1].

For a sense of scale, somewhere around 5 to 10 percent of adults have restless legs symptoms, and only about 1 to 3 percent have them often enough and badly enough to need treatment [3][2]. Women are affected roughly twice as often as men [3]. Hold onto that last point, because it becomes important when we talk about why restless legs and fibromyalgia overlap.

Why it clusters with fibromyalgia

This is the part with the strongest evidence, so it’s where we’ll spend real time. The key study here compared 172 people with fibromyalgia against 63 controls who were free of pain and fatigue [4]. After adjusting for age and sex, restless legs turned up in 33 percent of the fibromyalgia group versus just 3.1 percent of the controls [4]. In plain terms, about a third of people with fibromyalgia versus roughly one in thirty without it.

The odds ratio, the number researchers use to size up an association, came out at about 11.7 [4]. That sounds enormous, and the direction absolutely is real, but I want to be honest about the size, because the confidence interval around that number was very wide, running from about 2.6 all the way to 53 [4]. That happens when a study is smallish and the thing you’re counting is rare in the comparison group. So the honest read is this: restless legs is clearly and substantially more common in fibromyalgia, but the exact multiple is fuzzy, and a single cross-sectional study like this can’t tell us one causes the other [4]. It’s also worth saying plainly that nobody has yet pooled all the fibromyalgia studies into a proper meta-analysis, so we’re working from good individual studies rather than a settled combined figure.

Why would these two things travel together? The most compelling thread is central sensitisation, the same nervous-system volume-turned-up mechanism that sits at the heart of fibromyalgia pain. A 2026 study found that people with restless legs scored significantly higher on a central sensitisation questionnaire than healthy controls, and the worse the restless legs, the higher the score [5]. So, restless legs might not be purely a leg problem at all. It may share that amplified central processing with fibromyalgia, which would explain a lot about why the two keep showing up in the same people. On top of that, there’s an overlap in the dopamine system, and the researchers on that fibromyalgia study floated another possibility worth flagging: that the antidepressants often used to treat fibromyalgia might themselves nudge some people toward restless legs [4]. That’s their speculation about their own data, not a proven fact, but it sets up a section we’ll come back to.

Hypermobility, hEDS and POTS: honest about thin ground

Here I have to be straight with you, though, because this is exactly the kind of place where health content tends to overreach in very annoying ways. If you’re hypermobile or you’ve got hypermobile EDS and you want to know your odds of restless legs, the honest answer is that nobody has properly measured it (I know, massive surprise there).

The best data we have comes from a large 2025 international survey of people with hypermobile EDS and hypermobility spectrum disorder [6]. Among more than 3,300 people with hEDS, about 16.5 percent reported restless legs, compared with 10.3 percent of those with HSD [6]. But every one of those diagnoses was self-reported, nobody applied the five criteria, and the people who fill in a 418-question survey about their condition tend to be the more severely affected, which skews the numbers upward [6]. The survey also compared against an outside dataset and produced a much bigger difference, but that comparison lines up two completely different populations measured in different ways, so it almost certainly overstates things [6]. My take: restless legs does seem to get reported more often by hypermobile people, but treat that as a pattern worth raising with your clinician, not an established prevalence figure. And crucially, no study supports the idea that bendy joints themselves cause restless legs, so I’m not going to imply one.

The picture is a little clearer for POTS, which sits close to hypermobility for a lot of people. A 2021 study found restless legs in 15.6 percent of people with POTS versus 4.6 percent of controls [7]. Small study, questionnaire-based, but the direction fits. And there’s a signal in mast cell activation syndrome too, where one 2025 study reported restless legs in 37.2 percent of women with MCAS versus 11.8 percent of controls [8]. None of this proves anything on its own, but if you’re someone whose body collects these overlapping labels, restless legs belongs on the list of things to ask about.

The iron story, done properly

Almost everything you’ll read about restless legs and iron gets compressed into a neat little chain: low iron means low dopamine means restless legs, take iron, problem solved. It’s tidy, it’s memorable, and it’s not what the evidence actually says.

The more honest version is this. Iron is a cofactor for the enzyme that makes dopamine, so there’s a real biological reason iron and the dopamine system are linked [9]. But the best review of brain iron in restless legs is careful to describe it as a dysregulation of brain iron, not simply a shortage, and it points out that people with iron overload can still get restless legs, which shouldn’t happen if the story were as simple as “more iron, less symptoms” [9]. It even flags that researchers can’t yet say whether the brain iron changes cause restless legs or are a by-product of it [9]. One genuinely useful thing that same work shows is that brain iron can be low even when the iron in your blood looks perfectly normal [9]. That matters, because it explains why a blood test that your GP calls fine doesn’t necessarily rule iron out of the picture.

Which brings us to testing, and when it comes to iron this is where you can actually do something useful. If restless legs is significant, current guidance says you should have your iron properly checked, and that means two things measured together: ferritin, which reflects your iron stores, and transferrin saturation, which reflects iron availability [10]. The test should be done in the morning, and you should avoid iron-containing supplements and foods for at least 24 hours beforehand, because otherwise the numbers get misleadingly high [10].

Now, the numbers. The threshold where topping up iron becomes worth considering for restless legs is a ferritin at or below 75 nanograms per millilitre, or a transferrin saturation below 20 percent [10]. I need you to notice two things about that. First, it’s deliberately different from the threshold your GP uses for ordinary iron deficiency, because the target here is iron in the brain, not preventing anaemia [10]. A ferritin that gets called “normal” on a standard report can still be low enough to matter for restless legs. Second, and I’m quoting the guideline’s own honesty here, those exact cut-offs are expert consensus that has, in their words, not been empirically tested [10]. They’re the best agreed guess of the people who study this, which is not nothing, but it’s not a hard biological law either. So if your iron sits near those lines, it’s a conversation with your prescriber, not a verdict.

The uncomfortable part: your fibromyalgia meds might be feeding it

This is the section I most want you to read carefully, because when it comes to your existing medications, it’s the one thing almost nobody joins up for you, and it’s genuinely double edged.

The first step in managing restless legs, before any new drug goes anywhere near it, is to deal with the things that stir it up. The current guideline names alcohol, caffeine, and three drug classes, antihistaminergic, serotonergic, and antidopaminergic medications, plus untreated sleep apnoea [10]. Now look at what usually sits in a fibromyalgia medicine cabinet. The European recommendations for fibromyalgia point to amitriptyline, duloxetine, pregabalin, tramadol and cyclobenzaprine [11]. Some of those land squarely on that trigger list, which is why this deserves real attention rather than a throwaway line.

But I promised you the evidence done properly, and the popular version of this is more alarming than the data warrants, so let’s be precise. The best systematic review of antidepressants and restless legs, covering 18 studies, found that new or worsening restless legs after starting an antidepressant is actually uncommon [12]. Mirtazapine and venlafaxine carry the clearest warning signs [12]. But amitriptyline, sertraline and fluoxetine mostly increase small leg movements that don’t disrupt sleep and that the reviewers judged unlikely to be clinically significant [12]. Duloxetine, one of the most common fibromyalgia drugs, has essentially no restless-legs-specific data at all, so anyone who tells you confidently that it wrecks your legs is going beyond the evidence.

Tramadol is the one I’d actually flag hardest. It’s recommended for severe fibromyalgia pain, yet it sits in the strongest-evidence group of drugs shown to bring on or worsen restless legs [11][13]. So if you’re on tramadol and your legs are bad, that’s a specific and worthwhile thing to raise with your prescriber, who can weigh the pain benefit against the leg cost.

Then there’s pregabalin, which is the strangest and most useful case of all. It’s a recommended treatment for restless legs, one of the strongest recommendations there is [10]. It’s also used, more weakly, for fibromyalgia [11]. So the same drug can be treating your pain and your restless legs at once. In a large trial it did better than placebo for restless legs, with the caveat that this is one trial and, as with any single study, the exact size of the benefit shouldn’t be treated as gospel [14]. But I’m going to report the harm in the same breath as the benefit, because that’s the honest thing to do: in that trial there were six cases of suicidal thinking in the pregabalin group versus two or three in the comparison groups [14]. Small numbers, but they belong on the table.

Two more honest corrections while we’re here, because they cut against the usual advice. Caffeine gets named as a trigger, but a large study following tens of thousands of people found no link between caffeine and actually developing restless legs [15]. And alcohol, also on the caution list, was if anything associated with slightly lower risk in that same study, though not significantly [15]. So those two cautions rest on expert consensus and the idea that they might worsen existing symptoms, rather than strong proof, and it’s fine to know that.

The point of all this isn’t to tell you to bin your medications. It’s the opposite. Several of the drugs used in fibromyalgia pull in different directions on restless legs, one of them is a genuine treatment for it, and the picture is nuanced enough that the only sensible move is a proper medication review with your prescriber. Never stop or switch anything on the strength of a blog, including this one.

What actually helps

The good news is that the options for restless legs have genuinely improved, and the order of play is clearer than it used to be.

Step one, as we’ve covered, is removing the triggers and getting your iron properly tested, then topping it up if those studies show you need it [10]. When iron is warranted, the guideline puts intravenous iron in the form of ferric carboxymaltose among the strongest-evidence options, with oral iron a reasonable route if your ferritin is on the low side, so it’s worth asking your prescriber which one fits your situation [10][16].

The bigger shift is in the drugs. As of the 2025 guideline, the first-line medications are a group called the gabapentinoids: gabapentin, gabapentin enacarbil and pregabalin, nerve-calming medicines originally developed for seizures and nerve pain [10]. They carry strong recommendations, and importantly they’re not associated with a long-term complication called augmentation, which we’ll come to properly in a moment [10]. A 2026 management update from the field says the same thing, putting gabapentinoids first for ongoing restless legs [17].

The genuinely notable change is what happened to the dopamine drugs, the medicines that mimic dopamine in the brain. Ones like pramipexole, ropinirole and rotigotine used to be the go to for restless legs. The current guideline now recommends against using them as standard [10]. A plain language summary of the guideline puts it bluntly: the recommendation is now against the standard use of dopamine agonists [18]. If you’ve been on one of these for years, that’s not a reason to panic or to stop suddenly, but it is a strong reason to have a review.

One thing worth knowing is that not everyone agrees on all of this. When the World Sleep Society looked at the guideline, the societies that responded mostly backed it, but the anti-dopamine-drug stance in particular drew regional disagreement, and access to the recommended options like intravenous iron and gabapentin enacarbil varies a lot from country to country [19]. So the guidance is clearer than it was, but it isn’t identical everywhere, and no single option is the one right answer for everyone. There are four strong recommendations, three gabapentinoids and intravenous iron, and which fits you depends on your iron status, your other conditions and your prescriber’s judgement [10].

Augmentation: the trap worth understanding

I mentioned augmentation as the reason the dopamine drugs fell out of favour, so let’s name it properly [1]. Augmentation is when the treatment itself gradually makes the condition worse [20]. The symptoms start creeping earlier into the day, they spread to parts of the body that weren’t affected before, like the arms, and, most tellingly, increasing the dose makes things worse rather than better [1][20].

It’s common enough to take seriously. One review put augmentation at roughly 8 percent per year on pramipexole, and noted that when levodopa is taken daily, around 60 percent of people run into it within six months [1]. In a head-to-head trial, augmentation showed up in about 2 percent of people on pregabalin versus nearly 8 percent on a standard dose of pramipexole [14]. Nobody has fully pinned down why dopamine drugs do this, so I won’t pretend the mechanism is settled [1].

The practical takeaway is simple and genuinely useful. If you’re on a dopamine drug for restless legs and your symptoms are getting worse, the instinct is to assume the condition is progressing and ask for more. Augmentation flips that logic on its head. So, if that’s you, the specific word to bring to your prescriber is “augmentation”, because the answer might be less of the drug, or a different one entirely.

The non-drug things worth trying

Alongside the medical side, there are lower-risk things worth a go. I’ll be straight about the evidence, which is thinner here than for the drugs, but these are low cost, low risk, and a sensible place to start.

Exercise has the most encouraging evidence. A small trial had people do a mix of aerobic and lower-body resistance work three times a week, and restless legs severity dropped by 39 percent over the study versus under 8 percent in the group that didn’t exercise [21]. It was a small trial and I won’t oversell it, but there’s a lovely bonus here: exercise is also the single strongest recommendation in the European fibromyalgia guidelines [11]. So if you’re managing both, movement is the one intervention with proper backing on both sides of the overlap [11][21].

Pneumatic compression, those wraps that gently squeeze the legs, has one decent little trial behind it. Thirty five people used a device for an hour a day for a month, and restless legs severity fell meaningfully compared with a dummy device, with a third of the real-device group getting complete relief [22]. One small study, so hold it loosely, but it’s harmless to try.

If you snore heavily or have been told you might have sleep apnoea, get it looked at, because restless legs turns up in as many as 36 percent of people with sleep apnoea, and treating the apnoea seems to help the legs in the studies we have, thin as they are [23]. And the usual sleep hygiene advice, along with easing off the triggers, is standard guidance even though nobody has run a proper trial on sleep hygiene alone for restless legs [2][10].

None of these replace the medical route if your restless legs is severe. But they’re very low risk, and trigger removal is the guideline mandated first step anyway. So, for a lot of people they do take the edge off while the rest gets sorted.

Where this leaves you

Restless legs on top of fibromyalgia or hypermobility can feel like one insult too many, especially when it’s stealing sleep you were already short of (which is whole issue unto it’s self. But it’s a named, understood, and increasingly treatable thing, and there are more good options now than there were even two years ago. The moves are clear enough to act on. Ask your GP to test your iron properly, ferritin and transferrin saturation together, first thing in the morning. Book a proper medication review with your prescriber, because some of what you’re taking might be helping and some might be hurting. Try the low-risk things, especially movement. And if you’re on an old-style dopamine drug and it’s getting worse, ask your prescriber specifically about augmentation.

You don’t have to accept this as just another thing your body does to you at night. It’s worth chasing down properly, and now you know what a proper answer actually looks like.

– Adam –

Frequently asked questions

Is restless legs syndrome the same as leg cramps?

No, and telling them apart matters. Leg cramps are sudden, painful muscle tightenings, whereas restless legs is an urge to move driven by an uncomfortable sensation that eases when you actually move. Cramps are one of the specific mimics that a proper restless legs diagnosis is meant to rule out, which is why the fifth diagnostic criterion exists.

Will iron tablets fix my restless legs?

Only if your iron studies show you need them. The move is to get ferritin and transferrin saturation tested together, first thing in the morning and away from iron supplements, then talk to your prescriber. The threshold that matters for restless legs is lower than the one used for ordinary iron deficiency, so a result your GP calls normal can still be worth acting on.

Can my fibromyalgia medication cause restless legs?

It can cut both ways. Some fibromyalgia drugs, like tramadol, have a real signal for worsening restless legs, while pregabalin is actually a recommended treatment for it. The honest answer is that it is nuanced and drug-specific, which is why a medication review with your prescriber beats stopping or switching anything on your own.

Do I need a sleep study to be diagnosed with restless legs?

No. Restless legs is diagnosed from your history against five criteria, not from a sleep study. The involuntary leg movements a sleep study can pick up are a supporting clue, but they are neither necessary nor enough on their own.

Is restless legs more common if I am hypermobile?

It seems to get reported more often by hypermobile people, but the evidence is thin, based on self-report surveys rather than proper diagnostic studies. Treat it as a pattern worth raising with your clinician rather than a settled figure, and know that bendy joints themselves have not been shown to cause restless legs.

References

  1. Gossard TR, Trotti LM, Videnovic A, St Louis EK. Restless Legs Syndrome: Contemporary Diagnosis and Treatment. Neurotherapeutics. 2021;18(1):140-155. doi: 10.1007/s13311-021-01019-4
  2. Rizek P, Kumar N. Restless legs syndrome. CMAJ. 2017;189(6):E245. doi: 10.1503/cmaj.160527
  3. Ohayon MM, O’Hara R, Vitiello MV. Epidemiology of restless legs syndrome: a synthesis of the literature. Sleep Medicine Reviews. 2012;16(4):283-295. doi: 10.1016/j.smrv.2011.05.002
  4. Viola-Saltzman M, Watson NF, Bogart A, Goldberg J, Buchwald D. High Prevalence of Restless Legs Syndrome among Patients with Fibromyalgia: A Controlled Cross-Sectional Study. Journal of Clinical Sleep Medicine. 2010;6(5):423-427. doi: 10.5664/jcsm.27929
  5. Takano Y, Yanagihara M, Tanioka K, Inoue Y. Significance of central sensitization in the disease process of restless legs syndrome. Sleep Medicine. 2026;137:106892. doi: 10.1016/j.sleep.2025.106892
  6. Daylor V, Griggs M, Weintraub A, Byrd R, Petrucci T, Huff M, et al. Defining the Chronic Complexities of hEDS and HSD: A Global Survey of Diagnostic Challenges, Life-Long Comorbidities, and Unmet Needs. Journal of Clinical Medicine. 2025;14(16):5636. doi: 10.3390/jcm14165636
  7. Dodson C, Bagai K, Weinstock LB, Thompson E, Okamoto LE, Peltier A, et al. Restless legs syndrome is increased in postural orthostatic tachycardia syndrome. Journal of Clinical Sleep Medicine. 2021;17(4):791-795. doi: 10.5664/jcsm.9020
  8. Weinstock LB, Afrin LB, Reiersen AM, Brook J, Blitshteyn S, Ehrlich G, et al. Prevalence and treatment response of neuropsychiatric disorders in mast cell activation syndrome. Brain, Behavior, & Immunity – Health. 2025;48:101048. doi: 10.1016/j.bbih.2025.101048
  9. Schulte EC, Kaffe M, Schormair B, Winkelmann J. Iron in Restless Legs Syndrome. Movement Disorders Clinical Practice. 2014;1(3):161-172. doi: 10.1002/mdc3.12047
  10. Winkelman JW, Berkowski JA, DelRosso LM, Koo BB, Scharf MT, Sharon D, et al. Treatment of restless legs syndrome and periodic limb movement disorder: an American Academy of Sleep Medicine clinical practice guideline. Journal of Clinical Sleep Medicine. 2025;21(1):137-152. doi: 10.5664/jcsm.11390
  11. Macfarlane GJ, Kronisch C, Dean LE, Atzeni F, Häuser W, Fluß E, et al. EULAR revised recommendations for the management of fibromyalgia. Annals of the Rheumatic Diseases. 2017;76(2):318-328. doi: 10.1136/annrheumdis-2016-209724
  12. Kolla BP, Mansukhani MP, Bostwick JM. The influence of antidepressants on restless legs syndrome and periodic limb movements: a systematic review. Sleep Medicine Reviews. 2018;38:131-140. doi: 10.1016/j.smrv.2017.06.002
  13. Hoque R, Chesson AL Jr. Pharmacologically Induced/Exacerbated Restless Legs Syndrome, Periodic Limb Movements of Sleep, and REM Behavior Disorder/REM Sleep Without Atonia: Literature Review, Qualitative Scoring, and Comparative Analysis. Journal of Clinical Sleep Medicine. 2010;6(1):79-83. doi: 10.5664/jcsm.27716
  14. Allen RP, Chen C, Garcia-Borreguero D, Polo O, DuBrava S, Miceli J, et al. Comparison of Pregabalin with Pramipexole for Restless Legs Syndrome. New England Journal of Medicine. 2014;370(7):621-631. doi: 10.1056/NEJMoa1303646
  15. Batool-Anwar S, Li Y, De Vito K, Malhotra A, Winkelman J, Gao X. Lifestyle Factors and Risk of Restless Legs Syndrome: Prospective Cohort Study. Journal of Clinical Sleep Medicine. 2016;12(2):187-194. doi: 10.5664/jcsm.5482
  16. Allen RP, Picchietti DL, Auerbach M, Cho YW, Connor JR, Earley CJ, et al. Evidence-based and consensus clinical practice guidelines for the iron treatment of restless legs syndrome/Willis-Ekbom disease in adults and children: an IRLSSG task force report. Sleep Medicine. 2018;41:27-44. doi: 10.1016/j.sleep.2017.11.1126
  17. Silber MH, Berkowski JA, Buchfuhrer MJ, DelRosso LM, Earley CJ, Lipford MC, et al. An Updated Algorithm for the Management of Restless Legs Syndrome. Mayo Clinic Proceedings. 2026. doi: 10.1016/j.mayocp.2026.05.010
  18. Koo BB, Berkowski JA, Buchfuhrer M. The treatment of restless legs syndrome and periodic limb movement disorder: a plain language summary of the AASM Clinical Practice Guidelines. Expert Review of Neurotherapeutics. 2025;25(9):1131-1141. doi: 10.1080/14737175.2025.2536085
  19. Ferri R, Inoue Y, Manconi M, Silber MH, Trenkwalder C, Kushida CA. Partial endorsement of “Treatment of restless legs syndrome and periodic limb movement disorder: an American Academy of Sleep Medicine clinical practice guideline” by the World Sleep Society. Sleep Medicine. 2025;134:106734. doi: 10.1016/j.sleep.2025.106734
  20. García-Borreguero D, Allen RP, Kohnen R, Högl B, Trenkwalder C, Oertel W, et al. Diagnostic Standards for Dopaminergic Augmentation of Restless Legs Syndrome: Report from a WASM-IRLSSG Consensus Conference at the Max Planck Institute. Sleep Medicine. 2007;8(5):520-530. doi: 10.1016/j.sleep.2007.03.022
  21. Aukerman MM, Aukerman D, Bayard M, Tudiver F, Thorp L, Bailey B. Exercise and Restless Legs Syndrome: A Randomized Controlled Trial. Journal of the American Board of Family Medicine. 2006;19(5):487-493. doi: 10.3122/jabfm.19.5.487
  22. Lettieri CJ, Eliasson AH. Pneumatic Compression Devices Are an Effective Therapy for Restless Legs Syndrome: A Prospective, Randomized, Double-Blinded, Sham-Controlled Trial. Chest. 2009;135(1):74-80. doi: 10.1378/chest.08-1665
  23. Srivali N, Thongprayoon C, Cheungpasitporn W, Zinchuk A, Koo BB. Impact of continuous positive airway pressure therapy on restless legs syndrome in patients with coexistent obstructive sleep apnea: a qualitative systematic review. Journal of Clinical Neuroscience. 2025;133:111075. doi: 10.1016/j.jocn.2025.111075

Read our latest articles

More Articles