Legs
Restless legs
An uncomfortable, often indescribable urge to move the legs — usually worse in the evening and at rest and relieved by movement — that can be a condition in its own right or a clue to low iron, kidney problems or a nerve disorder.
Education and reference only. This explains the common causes of restless legs and the warning signs that need urgent help, in plain language — it is not a diagnosis or a substitute for advice from a clinician. If you feel very unwell or are worried, seek medical help.
Quick answer
What is restless legs?
Restless legs describes a powerful and unpleasant need to move the legs, often accompanied by crawling, tingling, pulling or aching sensations deep within them. The hallmark is timing and relief: symptoms come on or worsen when sitting or lying still, are typically worst in the evening and at night, and ease — at least briefly — by walking, stretching or moving.
- Get urgent help: Seek urgent advice if leg restlessness comes with new weakness, numbness or loss of bladder or bowel control, which suggests a nerve or spinal problem. Seek a prompt appointment if symptoms are severe enough to wreck your sleep most nights and leave you exhausted by day.
- Self-care: Many people gain relief from simple, regular habits.
About restless legs
Restless legs describes a powerful and unpleasant need to move the legs, often accompanied by crawling, tingling, pulling or aching sensations deep within them. The hallmark is timing and relief: symptoms come on or worsen when sitting or lying still, are typically worst in the evening and at night, and ease — at least briefly — by walking, stretching or moving. Because it disrupts settling to sleep, it is a common cause of broken nights and daytime tiredness. Often it occurs on its own, but it can also be triggered or worsened by low iron stores, by long-term kidney disease, by pregnancy, by certain medicines, and occasionally it appears alongside conditions affecting the nervous system. Looking for and treating an underlying cause, especially low iron, can make a real difference, so persistent symptoms are worth investigating.
When to get help
Call 999 or go to A&E if restless legs comes with any of these warning signs:
- Seek urgent advice if leg restlessness comes with new weakness, numbness or loss of bladder or bowel control, which suggests a nerve or spinal problem.
- Seek a prompt appointment if symptoms are severe enough to wreck your sleep most nights and leave you exhausted by day.
- Get checked if restless legs come with marked tiredness, breathlessness or pallor, which may point to low iron.
- Arrange review if symptoms began or worsened sharply after starting a new medicine.
When to see a doctor
Restless legs is rarely dangerous, but it is worth seeing a doctor if it regularly disturbs your sleep, leaves you tired during the day, or is getting steadily worse. Because low iron is a common and treatable trigger, a simple blood test is often helpful, so ask to be checked rather than assuming nothing can be done. Seek help sooner if the sensations are accompanied by genuine weakness or numbness, changes in bladder or bowel control, or if the problem started soon after a new medicine, as these need separate assessment.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
What can cause it
Common causes of restless legs
Restless legs has many possible causes. Each links to a full, plain-language guide to that condition — what it is, how it's treated and when to seek help.
What helps
Self-care and what you can do
Many people gain relief from simple, regular habits. A consistent sleep routine helps, as tiredness can make symptoms feel worse. In the evening, gentle stretching, a walk, a warm bath or massaging the legs can settle the urge to move, and some people find a cool or warm compress soothing. Cutting back on caffeine, alcohol and nicotine, particularly later in the day, often reduces symptoms, and keeping active with moderate daytime exercise tends to help — though very intense late exercise can backfire. If you have been found to have low iron, following your clinician's advice to restore your iron stores can substantially ease the problem.
Answers
Restless legs: frequently asked questions
What makes restless legs worse at night?
The natural daily rhythm of the body means symptoms typically peak in the evening and at night, and lying still removes the movement that normally relieves them. This is why settling to sleep is often the hardest time.
Can restless legs be a sign of low iron?
Yes. Low iron stores are one of the most common and treatable triggers, so a blood test to check your iron is often recommended. Correcting low iron can significantly improve symptoms.
Is restless legs linked to any serious conditions?
It is usually harmless, but it can occur alongside long-term kidney disease, in pregnancy, or with conditions affecting the nervous system. Persistent or worsening symptoms are worth investigating to be sure.
Does caffeine affect restless legs?
For many people, yes. Caffeine, alcohol and nicotine — especially in the afternoon and evening — can make symptoms worse, so cutting back later in the day is a sensible first step.
Sources
Where this is drawn from
- NICE CKS: Restless legs syndrome.
- Royal College of Psychiatrists: sleep problems.
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