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

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Adam Foster

Director at The Fibro Guy

Adam Foster is the founder of The Fibro Guy and one of the leading voices in hypermobility, EDS, and chronic pain rehabilitation. A former Reconnaissance Soldier, he developed chronic pain after an IED blast in Afghanistan and built his approach from the ground up when the medical system had no answers. Since 2009 he has worked with thousands of people across eight countries, drawing on pain neuroscience, motor learning, and sensorimotor rehabilitation. He co-authored "No Pain, No Pain" with trauma psychologist Dr Mairi Harper, directed the documentary "Invisible Monster," and has been featured in Forbes, BBC Radio 4, ITV News, LiveScience, and The Telegraph.

Latest posts by Adam Foster (see all)

• Walking with fibromyalgia: how much, and why it costs what it costs - 2 November 2026
• Water exercise and hydrotherapy for fibromyalgia - 2 November 2026
• Hypermobile hip exercises we use, and why clamshells aren’t one of them - 17 October 2026

Restless legs is one of those things that sounds almost harmless written down, and then you actually have it. You’re sat still for the first time in hours, or you’ve finally got comfortable in bed, and your legs start. That crawling, pulling, fizzing thing nobody has ever managed to describe properly, which eases off the second you move, and comes straight back the moment you stop. Stack that on top of fibromyalgia or hypermobility, which have usually made a fair mess of your sleep already, and it’s a lot to be dealing with.

It does have a proper name though: restless legs syndrome, or Willis Ekbom disease (a name almost nobody actually uses), and it turns up a great deal more often in people like you than it does in the general population.

That’s not a coincidence, whatever you may have been told and by whoever told you it. There are documented reasons these things travel together, and the treatment side of it has genuinely moved on in the last couple of years, which isn’t something we get to say very often in this space (like, very little).

If you’re too wrecked tonight to read everything below, then these are the four that are worth acting on:

– Get your iron tested properly, which means ferritin and transferrin saturation together, first thing in the morning, with nothing iron containing the day before ^[10].

– Ask for a medication review, as some of what gets prescribed for fibromyalgia can stir restless legs up, and one of them is actually a recommended treatment for it ^[10][11].

– Move, if you can manage it, as it’s the one thing with decent backing on both sides of this overlap ^[11][21].

– If you’re on an older dopamine drug and things are getting worse, take the word augmentation to your prescriber, because the answer may well be less of the drug rather than more ^[10].

What restless legs actually is

Restless legs gets used as a phrase for any twitchy, achy leg at night, which is a shame really, as it’s a specific diagnosis with five criteria and all five have to be met ^[1]. There’s a mnemonic for them, URGES, which is about as good as medical mnemonics ever get ^[2]. Urge to move the legs, usually with an unpleasant sensation you can’t quite name. Rest brings it on, or makes it worse. Getting up and moving relieves it, at least while you keep moving. Evenings and nights are when it shows up or gets worse. And other causes have to be excluded ^[1][2].

That last one matters a great deal more for you than it does for most people. The fifth criterion is there to separate real restless legs from the things that look like it, and the list of look alikes reads like a greatest hits of fibromyalgia and hypermobility complaints: leg cramps, aching from sitting in one position too long, venous problems, arthritis pain ^[1]. So, a proper diagnosis isn’t somebody ticking a “my legs feel odd at night” box, it’s somebody checking that what you’ve got is this, and not one of the several other reasons legs can play up.

You don’t need a sleep study for it either, which surprises a lot of people. Those involuntary leg jerks that everybody associates with restless legs, the periodic limb movements, are a supporting clue rather than a requirement, and the diagnosis is made on the history ^[1].

It isn’t rare, by the way. Up to one adult in ten reports the symptoms, although only a minority have them often enough or badly enough to need treating ^[2][3]. Women get it roughly twice as often as men ^[3], which is worth holding onto for the next section.

Why it clusters with fibromyalgia

Fibromyalgia and restless legs turn up together far more than chance would allow. When somebody went looking for it properly, applying the criteria rather than just asking people whether their legs felt funny, it turned up in about a third of a fibromyalgia group. In the comparison group, people free of pain and fatigue, it was close to absent ^[4].

So, the direction of it isn’t really in doubt, and the gap is a big one. The exact size of that gap is a lot less certain though, as it was one round of counting in a fairly modest group of people, and the range those numbers were compatible with was very wide indeed ^[4]. Counting two groups at a single moment in time also can’t tell you which of the two turned up first ^[4].

Why would they travel together at all? The most compelling thread by a distance is central sensitisation, that same nervous system volume turned up mechanism that sits underneath fibromyalgia pain. Those with restless legs score higher on a central sensitisation questionnaire than those without it, and the worse the restless legs, the higher the score ^[5].

Which is worth sitting with for a second, as it rather suggests restless legs may not be a leg problem at all, and that it shares the same amplified central processing as the fibromyalgia does. That would explain quite a lot about why the two keep appearing in the same person.

There’s an overlap in the dopamine system as well, and one further possibility that’s been put on the table, which is that the antidepressants so often prescribed for fibromyalgia might themselves nudge some people towards restless legs ^[4]. That one is a suggestion rather than a finding, and it’s worth coming back to later on.

Hypermobility, hEDS and POTS

The hypermobility side of all this is a good deal thinner, and the numbers we have are soft.

The best of them come from a large international survey of people with hEDS and hypermobility spectrum disorder, in which about one in six of the hEDS group reported restless legs, and it came out less common among those with HSD ^[6].

Three things make that soft though. Every diagnosis in it was self reported. The five criteria were never applied to anybody. And the sort of person who sits down and completes a very long survey about their own condition, tends to be the one most affected by it, which pushes the numbers up ^[6]. The survey also lined itself up against an outside dataset and got a much bigger gap out of that comparison, but it’s comparing two different populations measured in two different ways, so it almost certainly overstates things ^[6].

So, restless legs does appear to get reported more often by those with hypermobility, and in our opinion that’s a pattern worth raising with a clinician rather than a figure you can lean on. There’s nothing in any of it that supports hypermobile joints themselves causing restless legs, so we’re not going to imply that there is.

The picture is a bit clearer for POTS, which sits close to hypermobility for a lot of people, as restless legs turned up around three times as often in those with POTS as it did in the comparison group ^[7]. Small, questionnaire based, but the direction fits.

There’s a signal in mast cell activation syndrome too, where restless legs was reported more than three times as often by women with MCAS as by the comparison group ^[8]. None of that proves a great deal on its own. If you’re somebody whose body has collected a few of these overlapping labels though, restless legs belongs on the list of things to ask about.

The iron story

Almost everything written about restless legs and iron gets squashed down into a tidy little chain: low iron, low dopamine, restless legs, take iron, job done. It’s memorable, it’s tidy, it’s easy to repeat, and it isn’t what the evidence actually says.

The more accurate version goes like this. Iron is a cofactor for the enzyme that makes dopamine, so there is a real biological reason the two are linked ^[9]. But the careful reading of brain iron in restless legs describes it as a dysregulation rather than a simple shortage ^[9]. It also points out that people with iron overload can still get restless legs, which really shouldn’t happen if it were as simple as more iron, fewer symptoms ^[9]. Whether those brain iron changes cause restless legs, or are a by product of it, isn’t settled ^[9].

One genuinely useful thing does fall out of that: brain iron can be low while the iron in your blood looks perfectly normal ^[9]. Which is why a blood test your GP calls fine doesn’t put iron out of the picture.

Which brings us on to testing, and this is the bit you can do something with. Current guidance says that if your restless legs is significant, your iron should be properly checked, and properly means two things measured together: ferritin, which reflects your stores, and transferrin saturation, which reflects what’s actually available to be used ^[10]. Have it done in the morning, and keep off iron containing supplements and foods for at least a day beforehand, or the numbers come back misleadingly high ^[10].

The level at which topping iron up becomes worth considering for restless legs is a ferritin of 75 or under, and transferrin saturation has a line of its own, under a fifth, which counts whatever the ferritin says ^[10].

Two things about those numbers. They’re deliberately different from the threshold your GP uses for ordinary iron deficiency, as the target here is iron in the brain rather than preventing anaemia ^[10]. So a ferritin that gets called normal on a standard report can still be low enough to matter for your legs. And the guideline says of its own cut offs that they haven’t been empirically tested ^[10], which is unusually candid for a guideline. They’re the best agreed position of the people who study this, which isn’t nothing, but they aren’t a hard biological line either, so if your iron is sitting somewhere near them that’s a conversation rather than a verdict.

Fibromyalgia medication and restless legs

The first step in managing restless legs, before any new drug goes anywhere near it, is dealing with the things stirring it up in the first place. The current guideline names alcohol, caffeine, untreated sleep apnoea, and three classes of drug: antihistamines, the ones that act on serotonin, and the ones that block dopamine ^[10]. Now have a look at what tends to sit in a fibromyalgia medicine cabinet. The European recommendations for fibromyalgia point to amitriptyline, duloxetine, pregabalin, tramadol and cyclobenzaprine ^[11], and some of those land squarely on that trigger list.

The popular version of this is a lot more alarming than the evidence warrants though, so it’s worth being precise about it. Pull the antidepressant work together and new or worsening restless legs after starting one turns out to be uncommon ^[12]. Mirtazapine and venlafaxine carry the clearest warning signs of the group ^[12]. Amitriptyline, sertraline and fluoxetine mostly increase small leg movements that don’t wake you up, and were judged unlikely to matter ^[12]. And the review that pulled all of that together didn’t find restless legs specific data on duloxetine either way ^[12], so anyone telling you confidently that duloxetine wrecks your legs is a fair way ahead of the evidence.

Tramadol is the one we’d flag hardest of the lot. It’s recommended for severe fibromyalgia pain, and it also 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 genuinely worthwhile thing to put in front of your prescriber, who can weigh up the pain benefit against the leg cost.

Then there’s pregabalin, which is the strangest and most useful case of the whole lot. It’s a recommended treatment for restless legs, one of the strongest recommendations there is ^[10], and it’s used, rather more weakly, for fibromyalgia as well ^[11]. So the same drug can be treating your pain and your legs at the same time, and it did beat placebo for restless legs in a large trial, although that’s one trial and the exact size of the benefit isn’t gospel ^[14].

The harm belongs in the same breath as the benefit though. In that trial there were six reports of suicidal thinking in the pregabalin group, against a handful in the comparison groups ^[14]. Small numbers, and they still belong on the table.

Two corrections while we’re here, as they cut against the advice you’ll usually be given. Caffeine gets named as a trigger, but following tens of thousands of people over time turned up no link at all between caffeine and going on to develop restless legs ^[15]. Alcohol, also on the caution list, came out if anything slightly the other way in the same work, though not meaningfully so ^[15]. Both cautions rest on expert agreement, and on the idea that they might worsen symptoms you already have, rather than on anything particularly strong.

None of which is a reason to go and bin your medication, quite 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 it’s nuanced enough that the only sensible move is a proper medication review with your prescriber. Never stop or swap anything on the strength of a blog, including this one.

What actually helps

Step one, as above, is taking the triggers out and getting your iron properly tested, then topping it up if the results say you need to ^[10]. If iron is warranted, there are two routes into you. The guideline puts iron given through a drip, in the form of ferric carboxymaltose, among its strongest evidence options, with iron tablets a reasonable route if your ferritin is on the low side ^[10][16]. Worth asking which of the two fits you.

The bigger shift is in the drugs.

The current guideline puts a group called the gabapentinoids first: gabapentin, gabapentin enacarbil and pregabalin, which are nerve calming medicines originally built for seizures and nerve pain ^[10]. They carry strong recommendations, and they don’t cause augmentation, which is a long term problem we’ll get to in a moment ^[10]. The most recent management algorithm says much the same thing ^[17].

Now, the notable change is what’s happened to the dopamine drugs, the ones that mimic dopamine in the brain. Pramipexole, ropinirole and rotigotine used to be the standard answer for restless legs, and the current guideline now recommends against using them as standard ^[10]. The plain language version of that guideline puts it about as bluntly as guidelines ever put anything ^[18]. If you’ve been on one of them for years, that isn’t a reason to panic or to stop suddenly, but it is a very good reason to get a review booked.

Not everybody agrees on all of it, by the way. When the World Sleep Society had a look at the guideline, most of the societies that responded backed it. The stance on the dopamine drugs drew regional disagreement though, and access to things like iron infusions and gabapentin enacarbil varies enormously from one country to the next ^[19]. Which is a polite way of saying that it depends rather a lot on where you happen to live. So the guidance is clearer than it was, it just isn’t identical everywhere, and no single option is the right answer for everyone. There are four strong recommendations in it, the three gabapentinoids and iron through a drip. Which one fits you depends on your iron status, your other conditions, and your prescriber’s judgement ^[10].

Augmentation

Augmentation is when the treatment itself gradually makes the condition worse ^[20]. Symptoms start creeping earlier into the day, they spread to parts of the body that weren’t involved before, the arms being the usual one, and, most tellingly of all, increasing the dose makes things worse rather than better ^[1][20].

It’s common enough to take seriously. On pramipexole it runs at roughly eight percent a year, and with daily levodopa it’s a great deal more common again, tending to show up inside months rather than years ^[1]. Head to head, augmentation turned up about four times as often on a standard dose of pramipexole as it did on pregabalin ^[14]. Why the dopamine drugs do this hasn’t been pinned down by the people who study it ^[1], so we’re not going to pretend the mechanism is settled.

The practical part of this is the useful bit. 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 to ask for more of the drug. Augmentation flips that logic on its head completely. So if that’s you, augmentation is the specific word to take in with you, as the answer might be less of the drug, or a different one entirely.

The non drug things worth a go

Alongside the medical side of it there are some lower risk things worth trying. The evidence here is thinner than it is for the drugs, though they’re cheap, they’re low risk, and they’re a sensible place to start.

Exercise has the most encouraging evidence of the lot. A mix of aerobic work and lower body resistance work, three times a week, brought restless legs severity down by nearly forty percent over the course of it, against a much smaller change in the group who didn’t exercise ^[21]. It was a small study and we’re not going to oversell it. There’s a bonus though, as exercise is also the single strongest recommendation in the European fibromyalgia guidelines ^[11], so if you’re managing both of these at once, movement is the one thing with proper backing on both sides of the overlap ^[11][21].

Pneumatic compression, which is those wraps that gently squeeze the legs, has one decent little trial behind it. An hour a day for a month brought severity down against a dummy device, and about a third of the people using the real thing got complete relief ^[22]. Hold that one loosely, it’s harmless enough to try.

If you snore heavily, or somebody has mentioned sleep apnoea to you at some point and you’ve never followed it up, get it looked at. Restless legs turns up in more than a third of those with sleep apnoea, and treating the apnoea does seem to help the legs in what evidence there is, thin as that evidence is ^[23]. The usual sleep advice, along with easing off the triggers, is standard guidance as well, although the guideline is upfront that sleep hygiene on its own hasn’t been trialled for restless legs ^[2][10].

None of these replace the medical route if your restless legs is severe. They’re very low risk though, and taking the triggers out is the guideline’s own first step anyway, so for a lot of people they take the edge off while the rest of it gets sorted.

What to actually do

Ask your GP to test your iron properly, ferritin and transferrin saturation together, first thing in the morning. Get a medication review booked, as some of what you’re taking may be helping and some of it may not be. Try the low risk things, movement in particular. And if you’re on an older dopamine drug and it’s getting worse rather than better, ask specifically about augmentation.

It’s worth chasing down properly, as it’s considerably more treatable than it was a couple of years ago.

The Fibro Guy

Frequently asked questions

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