---
title: "Restless legs syndrome: Symptoms & Treatment | HealthAnswers"
description: "Restless legs syndrome (RLS) — urge to move legs, worse at night, causes, iron deficiency link, and NHS treatments."
url: https://healthanswers.co.uk/conditions/restless-legs-syndrome/
robots: noindex
---

# Restless legs syndrome: Symptoms & Treatment | HealthAnswers

Health A–Z

Restless legs syndrome (RLS) — urge to move legs, worse at night, causes, iron deficiency link, and NHS treatments.

Written by HealthAnswers editorial team Medically reviewed by [HealthAnswers UK doctor review panel](https://healthanswers.co.uk/our-doctors/) Reviewed 3 July 2026

## Quick answer

What is restless legs syndrome? Restless legs syndrome causes an uncomfortable urge to move the legs — often with crawling or tingling sensations — worse in the evening and at rest, relieved by movement. It disrupts sleep and is linked to iron deficiency, pregnancy, and kidney disease. Cutting caffeine and alcohol, treating low ferritin, and medicines like pramipexole help many people. See a GP if symptoms affect sleep several nights weekly.

## Who is this page for?

This page is for people in the UK who want a plain-English overview of Restless legs syndrome, including when to seek help and what NHS care usually involves. It explains general information, not what is wrong with you personally.

## Who should skip this page?

Skip this page if you need a diagnosis, a prescription, or emergency care. It cannot replace a GP, pharmacist, NHS 111 or 999. If you are in immediate danger, call 999; for urgent advice that is not life-threatening, call 111 in England, Scotland or Wales, or use your GP out-of-hours service in Northern Ireland.

On this page 8 sections

## Key facts about restless legs syndrome

- RLS affects roughly 5 to 10% of adults — many undiagnosed.
- Symptoms worsen at rest and in evening/night — walking or stretching brings relief.
- Check ferritin (iron stores) — levels below 75 mcg/L may worsen RLS even without anaemia.
- Secondary RLS — pregnancy, iron deficiency, kidney failure, some medicines — treat cause first.
- Dopamine agonists (pramipexole, ropinirole) are effective but need specialist monitoring long term.

## Restless legs syndrome (RLS)

**Restless legs syndrome** (Willis-Ekbom disease) is a ** neurological-sensory disorder** causing an **urge to move the legs** — usually accompanied by **uncomfortable sensations** — **worse at rest** and **worse in the evening/night**.

It is a **major cause of insomnia** — often mislabelled as “anxiety” or “circulation problems” for years before diagnosis.

## Diagnostic features (clinical)

All roughly true:

- Urge to move legs with unpleasant sensations

- Worse at rest — sitting, lying in bed

- Worse evening/night — circadian pattern

- Relief with movement — walking, stretching

- Often periodic limb movements during sleep — partner notices kicking

**Frequency** — symptoms **≥3 nights/week** with significant distress warrants treatment.

## Sensations described

Patients use vivid language:

- crawling , tingling , itching

- ” fizzy water in veins”

- deep ache

- electric shocks

Usually **bilateral** — both legs — sometimes arms in severe cases.

## Primary vs secondary RLS

### Primary (idiopathic)

- family history common

- starts before age 40

- gradual progression

- no clear cause — dopamine pathway dysfunction implicated

### Secondary — treat cause first

| Cause | Mechanism |
| --- | --- |
| Iron deficiency | Low brain iron — check ferritin |
| Pregnancy | Third trimester — often resolves postpartum |
| Chronic kidney disease | Uraemia — dialysis patients high risk |
| Diabetes neuropathy | Nerve damage overlap |
| Parkinson’s | Shared dopamine pathways |

**Medicines worsening RLS:**

- antihistamines (sedating)

- SSRIs , SNRIs

- metoclopramide , prochlorperazine

- some antipsychotics

Review with GP — do not stop psychiatric medicines abruptly.

## Investigation

GP orders:

- ferritin — treat if <75 mcg/L (some guidelines lower threshold) even if Hb normal

- FBC — [iron deficiency anaemia](https://healthanswers.co.uk/conditions/iron-deficiency-anaemia/)

- U&E — kidney function

- HbA1c — diabetes

- medicine review

**Neurology referral** if atypical — asymmetric, progressive weakness, upper limb only onset.

## Treatment ladder

### Lifestyle

- sleep hygiene — see [insomnia](https://healthanswers.co.uk/conditions/insomnia/)

- reduce caffeine and alcohol — especially evening

- moderate exercise — not late vigorous exercise

- leg massage , warm bath before bed

- pneumatic compression devices — some evidence

### Iron supplementation

If **ferritin low** — oral iron (or IV if not tolerated) — **recheck ferritin** — RLS may resolve

### Medicines (if symptoms persist)

| Drug class | Examples | Notes |
| --- | --- | --- |
| Dopamine agonists | pramipexole, ropinirole | Very effective — augmentation risk with long use — symptoms spread, worsen |
| Alpha-2-delta ligands | gabapentin, pregabalin | NICE option — especially with pain overlap |
| Low-dose opioids | specialist only | Refractory cases |

**Levodopa** — occasional use — augmentation common — not first-line chronic.

### Augmentation — important

Long-term dopamine agonists can **worsen RLS** — symptoms earlier in day, spread to arms — needs specialist switch to gabapentinoid.

## RLS and pregnancy

**Common third trimester** — usually **temporary**:

- iron if deficient

- avoid medicines unless severe — specialist advice

- resolves postpartum in most

## RLS vs other conditions

| Condition | Difference |
| --- | --- |
| Peripheral neuropathy | Constant numbness/burning — not purely movement-related relief |
| Leg cramps | Sudden painful muscle contraction — not urge to move |
| PAD | Exercise-induced claudication — vascular examination |
| Akathisia | From antipsychotics — inner restlessness whole body |

RLS is **real, common, and treatable** — if legs “won’t stay still” at night, ask GP for **ferritin** and structured treatment, not just sleeping tablets alone.

## ! When to see a GP about restless legs syndrome

See a GP if leg discomfort and urge to move disrupt sleep at least 3 nights weekly. Blood tests check ferritin, full blood count, kidney function, and glucose. Review medicines — some antidepressants and antihistamines worsen RLS. Seek urgent help if symptoms appear with severe anaemia symptoms or new neurological signs in legs.

## Common questions about restless legs syndrome

What are the symptoms of restless legs syndrome? Uncomfortable sensations in legs — crawling, tingling, aching, itching — with irresistible urge to move them. Worse when sitting or lying, especially evening and night. Temporary relief with walking, stretching, or rubbing. Periodic limb movements during sleep often disturb partner. What causes restless legs syndrome? Primary RLS — often genetic, starts before age 40. Secondary RLS — iron deficiency, pregnancy (especially third trimester), chronic kidney disease, diabetes neuropathy, Parkinson's disease. Medicines — antihistamines, SSRIs, metoclopramide — can trigger or worsen symptoms. Can iron deficiency cause restless legs? Yes — low ferritin strongly linked even when haemoglobin is normal. Iron supplementation may resolve RLS if ferritin is low — check levels before supplementing. See iron deficiency guide if anaemic. How is restless legs syndrome treated? Treat secondary causes; improve sleep hygiene; reduce caffeine and alcohol; moderate exercise. If ferritin low — iron replacement. Medicines — pramipexole, ropinirole (dopamine agonists), gabapentin/pregabalin, low-dose opioids in refractory cases — specialist initiation. Avoid dopamine agonists without monitoring — augmentation risk long term. Does magnesium help restless legs? Evidence is weak unless genuinely deficient. Worth correcting proven deficiencies (iron more important). Unregulated high-dose supplements carry risks — test first. Is restless legs syndrome serious? Not life-threatening but significantly affects sleep and quality of life — linked to insomnia, depression, and cardiovascular risk through sleep deprivation. Treating RLS improves sleep and daytime function.

## Sources

- [NHS — Restless legs syndrome](https://www.nhs.uk/conditions/restless-legs-syndrome/)
- [NICE — Restless legs syndrome](https://www.nice.org.uk/guidance)