Restless legs syndrome is an urge to move the legs with uncomfortable sensations that worsen at rest and in the evening and ease with movement. It is treated by correcting low iron, removing medications that trigger it, and using alpha-2-delta drugs such as gabapentin enacarbil or pregabalin as first-line therapy. Most patients get meaningful relief within a few weeks.
RLS lands in a psychiatric practice more often than people expect. It is a leading hidden cause of insomnia, it doubles the risk of depression and anxiety, and several common psychiatric medications make it worse. At Stedfast Psychiatry we look for RLS whenever a patient describes sleep-onset insomnia with leg discomfort, check iron stores, review every medication for RLS triggers, and treat it with current guideline-based options so that sleep, mood and daytime function can recover together.
Symptoms of RLS
- An urge to move the legs, often with crawling, tingling, pulling or aching sensations deep in the calves or thighs
- Symptoms begin or worsen when sitting or lying still, such as during long car rides, movies or at bedtime
- Symptoms are worse in the evening and at night and ease in the early morning
- Movement such as walking, stretching or rubbing the legs brings partial or complete relief
- Difficulty falling asleep and repeated awakenings, often with involuntary leg jerks during sleep
- Daytime fatigue, poor concentration and irritability from chronic sleep loss
- Low mood or anxiety that tracks with how bad the nights have been
- In some people, the same sensations in the arms or trunk as the condition progresses
Causes and risk factors
RLS has a strong genetic component: about half of people with early-onset RLS have a first-degree relative with it, and several risk genes (including MEIS1 and BTBD9) have been identified. The leading biological explanation is reduced iron availability in the brain, which impairs dopamine signaling in the circuits that regulate movement and sensation during rest. That is why RLS appears or worsens with iron deficiency, pregnancy (especially the third trimester), kidney failure and heavy blood loss, even when a routine hemoglobin is normal.
Secondary triggers matter in psychiatric care. Most SSRIs and SNRIs, mirtazapine, tricyclic antidepressants, antipsychotics, lithium and sedating antihistamines such as diphenhydramine (found in many over-the-counter sleep aids) can provoke or worsen RLS. Caffeine, alcohol and nicotine aggravate it. Peripheral neuropathy, diabetes and some spinal conditions can mimic or coexist with it. Sorting primary RLS from these contributors is the first step of treatment.
RLS affects an estimated 7 to 10 percent of the US population, and about 2 to 3 percent have symptoms severe enough to need treatment.
Source: National Institute of Neurological Disorders and Stroke
The 2024 clinical practice guideline recommends gabapentin enacarbil, gabapentin or pregabalin as first-line therapy and recommends against routine use of pramipexole and ropinirole because of augmentation.
Source: American Academy of Sleep Medicine, Journal of Clinical Sleep Medicine, 2024
Iron repletion is recommended for patients with RLS whose serum ferritin is at or below 75 ng/mL, a level many laboratories report as normal.
Source: International Restless Legs Syndrome Study Group consensus, Sleep Medicine, 2018
People with RLS have roughly two to three times the odds of depression and anxiety disorders compared with people without it.
Source: Winkelman et al., Journal of Clinical Sleep Medicine
How we diagnose it at Stedfast Psychiatry
RLS is a clinical diagnosis: there is no blood test or scan that confirms it. At Stedfast Psychiatry we use the five essential criteria from the International Restless Legs Syndrome Study Group (urge to move with sensations, worse at rest, relieved by movement, worse in the evening or night, and not explained by another condition such as leg cramps or positional discomfort) and grade severity with the International RLS Rating Scale (IRLS). We take a full sleep history, screen for depression and anxiety with the PHQ-9 and GAD-7, and ask about periodic limb movements that a bed partner may have noticed.
We order a serum ferritin, transferrin saturation and complete blood count on every patient with suspected RLS, because current guidelines treat a ferritin below 75 ng/mL as a target for iron repletion even when it is technically within the lab's normal range. We check kidney function, glucose and vitamin B12 when the history points that way, and we review every prescription and supplement for agents that worsen RLS. When the picture suggests neuropathy, narcolepsy, sleep apnea or periodic limb movement disorder on its own, we refer for a neurology consultation or a sleep study.
Treatment options
Medication management
Treatment begins with iron. If ferritin is below 75 ng/mL or transferrin saturation is under 20 percent, we start oral ferrous sulfate 325 mg every other day with vitamin C to improve absorption, and recheck in eight to twelve weeks. Intravenous iron (ferric carboxymaltose) is appropriate when oral iron fails or is not tolerated. For daily symptoms, the 2024 American Academy of Sleep Medicine guideline recommends alpha-2-delta ligands as first-line drugs: gabapentin enacarbil (Horizant, FDA-approved for moderate to severe RLS), gabapentin or pregabalin, taken in the early evening. These relieve sensations, improve sleep and help the pain and anxiety that often ride along. Dopamine agonists (pramipexole, ropinirole, the rotigotine patch) work quickly but are no longer preferred for long-term use because of augmentation, a paradoxical worsening in which symptoms start earlier in the day and spread to the arms; we reserve them for intermittent symptoms or special situations and keep doses low. For severe refractory RLS, low-dose opioids such as buprenorphine or oxycodone under careful monitoring are an established option. We also adjust psychiatric medications when they are the trigger, for example switching from an SSRI to bupropion, which does not worsen RLS and may help it.
Psychotherapy
Cognitive behavioral therapy for insomnia (CBT-I) does not treat the leg sensations directly, but it repairs the conditioned arousal, clock-watching and irregular sleep schedules that build up after months of difficult nights. When depression or anxiety has developed alongside RLS, CBT addresses both. Our therapists coordinate with your prescriber so the sleep plan and the medication plan reinforce each other.
What to expect
Your first visit is a 45 to 60 minute evaluation, in person or by video, that covers the sensations, their timing, your sleep, your mood and your full medication list. We send you for labs the same day if iron studies are needed. You will leave with a plan that usually combines iron repletion, a change to any triggering medication and, when symptoms are frequent, a first-line RLS medication. Follow-ups at four to six weeks let us adjust dose and timing, and we repeat the IRLS and sleep measures to confirm the plan is working. Most ongoing care works well through telehealth anywhere in Florida or South Carolina.
When to seek help
Make an appointment if leg discomfort is delaying sleep more than two nights a week, if an existing antidepressant seems to have made your legs worse, or if you have started dreading the evening. Seek help sooner if sleep loss is affecting your driving, work or mood. If sleep deprivation has brought on hopelessness or thoughts of self-harm, call or text 988, the Suicide and Crisis Lifeline, or go to the nearest emergency room.
Primary and secondary RLS
Primary (idiopathic) RLS usually begins before age 45, runs in families and progresses slowly over decades, often with long remissions. Secondary RLS appears later, develops faster and is tied to an identifiable cause: iron deficiency, pregnancy, chronic kidney disease, peripheral neuropathy or a medication. The distinction changes the plan. Secondary RLS often resolves when the cause is treated; the RLS of pregnancy, for example, usually disappears within weeks of delivery. Primary RLS is a long-term condition managed with the lowest effective dose of medication, periodic iron checks and attention to triggers.
Periodic limb movements of sleep
About 80 percent of people with RLS also have periodic limb movements of sleep: repetitive, stereotyped jerks of the legs every 20 to 40 seconds during light sleep. The sleeper is usually unaware of them, but a bed partner is not, and they fragment sleep enough to cause daytime fatigue. They show up on a polysomnogram and respond to the same medications as RLS. Periodic limb movements without the waking urge to move are a separate diagnosis (periodic limb movement disorder) and are also common in people taking antidepressants.
Differential diagnosis
Several conditions are mistaken for RLS. Akathisia, the inner restlessness caused by antipsychotics and sometimes by SSRIs, affects the whole body rather than the legs, is present throughout the day and is relieved only briefly by movement. Peripheral neuropathy causes burning or numbness that does not improve with walking. Nocturnal leg cramps are painful and visible. Positional discomfort resolves with a change of posture and has no evening pattern. Anxiety-related fidgeting lacks the sensory component. We ask about each of these, and about varicose veins, arthritis and claudication, before concluding that RLS is the diagnosis.
RLS and psychiatric medication
This is the part of RLS care a psychiatric practice is best placed to handle. Serotonergic antidepressants are the most common medication trigger, and the usual response in primary care, adding a sedating antihistamine for sleep, makes it worse. We have several ways out. Bupropion, which works on dopamine and norepinephrine, does not aggravate RLS and is a good antidepressant for many patients. Trazodone at low dose is generally tolerated. When an SSRI is essential and working, adding an alpha-2-delta medication often allows both to continue. Among antipsychotics, aripiprazole is less likely to worsen RLS than quetiapine or olanzapine. These substitutions are made gradually and with follow-up, never abruptly.
Lifestyle measures that help
Keep a regular sleep and wake time, and move your bedtime a little later if you are lying awake for an hour; time in bed without sleep strengthens the association between bed and restlessness. Exercise moderately in the morning or afternoon. Avoid caffeine after noon and alcohol in the evening. A hot bath, stretching or a few minutes of walking before bed reduces symptoms for many people. Mentally engaging activities while sitting, such as a crossword or a conversation, suppress symptoms more than passive ones like television. Keep a symptom diary for the first month of treatment so we can see what is and is not working.
Prognosis
RLS is not dangerous in itself, but untreated it erodes sleep, mood and quality of life in a way that compounds over years. With iron repletion, trigger removal and a first-line medication, most patients report substantial relief and better sleep within two months, and many with secondary RLS become symptom-free. Primary RLS tends to be lifelong with a slow course and periods of remission. The goals of long-term care are the lowest effective dose, avoidance of augmentation, periodic ferritin checks, and prompt attention to the depression and anxiety that sleep loss can produce.
Frequently asked questions
Why would I see a psychiatrist for restless legs?
Because RLS lives at the intersection of sleep, mood and medication. It is one of the most common causes of sleep-onset insomnia, it raises the risk of depression and anxiety, and antidepressants, antipsychotics and antihistamines are among its strongest triggers. A psychiatric provider can treat the RLS, protect your sleep and manage your mood with medications that do not make your legs worse, all in one plan. We refer to neurology or a sleep lab when the picture is atypical.
Is RLS the same as leg cramps or growing pains?
No. Leg cramps are sudden, painful, visible muscle contractions that you can usually feel as a hard knot. RLS is an urge to move with a vague, hard-to-describe sensation, relieved by movement rather than stretching the cramp out. Nocturnal leg cramps, neuropathy, arthritis and positional discomfort can coexist with RLS, which is why we take a careful history rather than assuming.
My ferritin is 40 and my doctor said it was normal. Why are you treating it?
Standard lab ranges for ferritin are built for anemia, not for RLS. Research shows that brain iron can be low even when blood iron is in the normal range, and RLS symptoms improve when ferritin is raised above 75 ng/mL. Guidelines from the International RLS Study Group and the American Academy of Sleep Medicine therefore recommend iron treatment at or below that level. Oral iron every other day is absorbed better than daily dosing and causes fewer stomach side effects.
What is augmentation and why do you avoid dopamine drugs?
Augmentation is a long-term complication of dopamine agonists such as pramipexole and ropinirole in which the medication gradually makes RLS worse: symptoms begin earlier in the afternoon, spread to the arms and need higher doses. It affects a large share of patients over several years of use. Alpha-2-delta medications do not cause augmentation, which is why they are now the first choice. If you are already on a dopamine agonist and doing well, we do not force a change, but we watch for the warning signs.
How quickly will treatment work?
Gabapentin enacarbil, gabapentin and pregabalin typically start helping within the first one to two weeks, with the full benefit by four to six weeks as the dose is adjusted. Iron takes longer: expect two to three months of oral iron before you notice a difference, and a few weeks after an intravenous infusion. Stopping a triggering medication can help within days. We measure progress with the IRLS scale at each follow-up.
Can I treat RLS without medication?
Mild or occasional RLS often responds to iron correction, cutting evening caffeine and alcohol, moderate daily exercise (not intense exercise late at night), a consistent sleep schedule, warm baths and leg massage before bed, and avoiding diphenhydramine sleep aids. Compression devices and pneumatic compression have some evidence. When symptoms occur most nights, these measures help but are usually not enough on their own, and that is where first-line medication comes in.
Is RLS treatment covered by insurance and available by telehealth?
Yes. Visits are billed as standard psychiatric evaluations and follow-ups, which most commercial plans and Medicare cover with your usual copay; self-pay new-patient visits are $185. Gabapentin and pregabalin are inexpensive generics, and gabapentin enacarbil is covered by many plans with prior authorization. The entire course of RLS care, including lab ordering and follow-up, can be done by video anywhere in Florida or South Carolina.
Does RLS happen in children and teenagers?
Yes, though it is often misread as growing pains, ADHD-related restlessness or behavioral bedtime resistance. Children with RLS frequently have low ferritin and a family history. Our child and adolescent providers evaluate sleep-onset problems carefully, check iron, and use iron repletion and behavioral sleep strategies before considering medication, which is used cautiously and off-label in this age group.
Where to get treatment for restless legs syndrome
Evaluation and treatment for restless legs syndrome is available at every Stedfast Psychiatry office and by video across Florida and South Carolina.
Related conditions
If you are thinking about harming yourself, call or text 988 now, or go to the nearest emergency room. This page is educational and does not replace an evaluation. Clinical content reviewed by Dr. David Husted, board-certified psychiatrist.