Restless legs syndrome: symptoms, causes, treatment and which doctor to see
What restless legs syndrome is, why it strikes at night, the iron and other tests worth doing, and treatments that help you sleep again.
Also known as: RLS; Willis-Ekbom Disease
What restless legs syndrome is
Restless legs syndrome (RLS), also called Willis-Ekbom disease, is a nervous system condition that causes an irresistible urge to move the legs, usually with unpleasant sensations deep inside them. It comes on when you are resting — sitting in the evening, on a long bus or train journey, or lying in bed — and moving the legs brings relief, but only for as long as you keep moving.
Because symptoms peak in the evening and at night, RLS can make it very hard to fall asleep and stay asleep. Over time the lost sleep causes daytime tiredness, irritability, poor concentration and low mood. Many people live with it for years without a name for it, or are told it is 'just weakness' or nerves.
RLS can be mild and occasional, or severe enough to disturb sleep almost every night. The good news is that it is usually treatable, and finding and correcting a cause such as low iron can make a big difference.
Symptoms
Doctors look for four core features, all of which need to be present:
- An urge to move the legs, usually with uncomfortable sensations in them
- Symptoms start or get worse during rest or inactivity
- Movement — walking, stretching, shaking the legs — relieves them, at least while it continues
- Symptoms are worse at night, or happen only in the evening and night
People describe the feeling in many ways: a crawling sensation, creeping, pulling, itching deep inside, tingling, throbbing or an ache. It is usually in the calves but can affect the thighs, feet and sometimes the arms. Many people with RLS also have leg jerks during sleep — repeated twitching or kicking that a bed partner may notice. These can disturb sleep further.
Poor sleep is often the main complaint. Leg cramps, varicose veins, arthritis and nerve damage can cause leg discomfort too, but they do not usually produce the same urge to move that is relieved by moving. See muscle cramps and diabetic nerve problems for those conditions.
Causes and risk factors
In many people no underlying cause is found. This 'primary' RLS often runs in families and may start earlier in life. Research points to problems with how the brain uses iron and the chemical messenger dopamine. In other people RLS is linked to another condition, or 'secondary':
- Low iron stores, with or without anaemia — common in India, especially in women
- Pregnancy, particularly in the later months; symptoms usually settle after delivery
- Chronic kidney disease and kidney failure, especially in people on dialysis
- Nerve damage in the legs, for example from diabetes
- Some medicines, including certain antihistamines found in cold and allergy remedies, some anti-sickness medicines, some antidepressants and some antipsychotics
Caffeine (tea, coffee, colas and energy drinks), alcohol, smoking and lack of sleep can all make symptoms worse.
How it is diagnosed
RLS is diagnosed from your description of the symptoms, so it helps to explain exactly what you feel, when it happens and what relieves it. Your doctor will examine your legs and nerves, review your medicines, and usually arrange blood tests to look for treatable causes:
- Ferritin — a measure of the body's iron stores; low or low-normal levels are an important, treatable cause, even when haemoglobin is normal
- Blood count — to look for anaemia
- Kidney function — to check for kidney disease
- Blood sugar — to check for diabetes, which can damage the nerves
A sleep study is not usually needed, but may be suggested if the diagnosis is unclear or another sleep disorder such as sleep apnoea is suspected.
Treatment
Treatment depends on how often symptoms occur, how much they disturb sleep, and whether there is an underlying cause.
Treating the cause
If iron stores are low, iron replacement is often the first step and can greatly improve or even settle symptoms. Your doctor may prescribe tablets or, when tablets do not work or are not tolerated, an iron infusion. Iron should be taken only under medical advice, because too much iron is harmful. If a medicine is making RLS worse, your doctor may suggest an alternative. Treating kidney disease or diabetes properly also helps.
Habits that help
- A regular sleep routine, going to bed and getting up at the same times
- Cutting down tea, coffee and colas, especially after the afternoon, and avoiding alcohol and tobacco
- Gentle leg stretching, a short walk or a massage in the evening
- A warm bath or a warm or cool pack on the legs before bed
- Regular moderate exercise during the day, but not hard exercise late in the evening
- Keeping the mind busy with a puzzle or reading when you have to sit for a long time, and choosing an aisle seat when travelling
Medicines
For frequent or severe symptoms, a doctor may prescribe medicine. Options include alpha-2-delta ligands, a group of medicines that calm nerve signalling and help sleep, and dopamine agonists, which act on the brain's dopamine system. Dopamine medicines can work well at first, but over time some people develop 'augmentation', where symptoms start earlier in the day, become stronger or spread to the arms. If you notice this, tell your doctor rather than increasing the dose yourself. For severe RLS that does not respond, specialists may consider other options.
During pregnancy, many medicines are avoided. Doctors usually focus on iron levels and simple measures, and symptoms generally fade after the baby is born.
Living with restless legs
RLS can be frustrating, but most people find a combination that keeps it under control. Keep a short diary of symptoms, sleep, caffeine and medicines for a couple of weeks to share with your doctor. Let your family know what is happening, as a bed partner may also be losing sleep. If tiredness or low mood is affecting your work or relationships, mention it — treating the sleep problem often helps both. See insomnia for more on sleep habits.
When to seek urgent help
Restless legs syndrome itself is not an emergency. But some leg symptoms need urgent care. Call 112 or 108, or go to the nearest emergency department, if you have:
- Sudden weakness or numbness in one leg or one side of the body, or difficulty speaking — possible signs of stroke
- A painful, swollen, warm calf, especially with breathlessness or chest pain — possible signs of a blood clot
- Sudden loss of feeling in both legs with loss of bladder or bowel control
Which doctor to see
A general physician can diagnose most cases of RLS, check iron and other blood tests, and start treatment. A neurologist is worth seeing if the diagnosis is uncertain, symptoms are severe, treatment is not working, or augmentation develops. People on dialysis should discuss symptoms with their nephrologist, and pregnant women with their gynaecologist.
You can find neurologists in Bengaluru or general physicians in Bengaluru on The Doctor Index, each with a registration you can check.
Questions to ask at your appointment
- Could my symptoms be restless legs syndrome, or something else?
- What is my ferritin level, and do I need iron?
- Could any of my current medicines be making it worse?
- Do I need medicine, and what side effects should I watch for?
- What should I do if symptoms start earlier in the day or get stronger?
Common questions
Questions people ask
- Is restless legs syndrome caused by weakness or a vitamin deficiency?
- Low iron stores are a well-known, treatable cause of restless legs, and doctors check ferritin for this reason. General 'weakness' is not a cause. Do not start iron or other supplements on your own; test first and follow your doctor's advice.
- Why are restless legs worse at night?
- Symptoms follow a daily rhythm and are linked to rest and inactivity, both of which peak in the evening. Changes in brain dopamine activity through the day are thought to play a part, which is why symptoms often ease in the early morning.
- Will restless legs go away after pregnancy?
- For most women, restless legs that start in pregnancy settle within weeks after delivery. Iron levels are often checked during pregnancy. If symptoms continue after the baby is born, see a doctor to look for another cause.
- Can restless legs syndrome be serious?
- It does not damage the body directly, but long-term sleep loss can affect mood, concentration, work and safety, such as driving while drowsy. That is why it is worth treating, even when it seems like a minor complaint.
This condition is usually assessed by a neurologist. Every profile shows the doctor’s registration and what has been checked.
Neurologists in Bangalore
A few neurologists listed on The Doctor Index. They are shown because of their speciality, not a stated interest in Restless Legs; ask the clinic whether the doctor sees it.
Related conditions
Practical reading
All postsSources
- MedlinePlus, US National Library of Medicine — Restless Legs
- Government of India — Emergency Response Support System (112)
- MedlinePlus, National Library of Medicine — Restless Legs — Public-domain health-topic summary
- Human Phenotype Ontology Consortium — terminology definitions — HPO licence; definitions reproduced without alteration
Restless legs syndrome: symptoms, causes, treatment and which doctor to see is original text by The Doctor Index; the compiled source draft was used for research. Source: MedlinePlus, National Library of Medicine. Orphadata Science: Free access data from Orphanet. © INSERM 1999; July 2026 data, CC BY 4.0. This product uses the Human Phenotype Ontology (hp/releases/2026-09-01). Only sources listed for this article apply. Source material has been selected and arranged; HPO definitions are reproduced without alteration. No source organisation endorses this compilation. Köhler S et al. The Human Phenotype Ontology project: linking molecular biology and disease through phenotype data. Nucleic Acids Research 2014;42(D1):D966–D974. doi:10.1093/nar/gkt1026.
General information, not advice about your situation. Errors can be reported through the corrections process. Reference TDI-C-2037.