Restless legs syndrome: symptoms, causes and treatment

Restless legs syndrome causes an urge to move the legs that is often worse during rest and at night.

The urge is usually paired with uncomfortable sensations such as tingling, pulling, crawling or aching. Moving the legs brings temporary relief, but the feeling can return when sitting or lying still. It can disrupt falling asleep and lead to tiredness during the day.

Restless legs and difficulty sleeping are very common presentations of restless legs syndrome. The sensations tend to appear when resting, become more noticeable later in the day, and ease with walking, stretching or moving. Symptoms may affect one or both legs and can vary from night to night.

Talk to a clinician if sleep is regularly disrupted, symptoms are painful, or they are affecting work, driving or mood. Sudden weakness, loss of sensation, marked swelling or severe one-sided leg pain needs prompt assessment because these are not typical features of restless legs syndrome.

Some people have restless legs syndrome without a clear cause. It can also be associated with low iron stores, pregnancy, chronic kidney disease and certain medicines. Iron deficiency anaemia can be relevant, so a clinician may look for underlying factors rather than assuming all symptoms have the same cause.

Symptoms can be occasional or recurrent. They may become more noticeable during periods of poor sleep, illness or medication changes, while other people have long quieter periods. Tracking the timing and triggers gives a clinician useful information when deciding whether treatment needs to change.

A family history, pregnancy, low iron stores, kidney problems and some medicines can be relevant. Caffeine, alcohol, nicotine and sleep deprivation may aggravate symptoms for some people. Bring a list of prescribed medicines, over-the-counter products and supplements to the appointment, as treatment changes should be individualised.

Diagnosis is based mainly on the characteristic urge to move, worsening at rest, relief with movement and a later-day pattern. A GP will ask about sleep, medical history and medicines, and may arrange a blood test to check iron and other possible contributors. Tests may also help rule out conditions that can mimic leg discomfort.

Treatment begins with addressing an identified contributor, such as low iron, and reviewing medicines that may worsen symptoms. Regular sleep timing, gentle activity, leg stretching and reducing evening stimulants can be useful. If symptoms remain disruptive, a clinician may discuss prescription medicine suited to the pattern and the person's other health conditions.

Do not start iron supplements or change prescribed medicine without advice, as the right approach depends on blood results, symptoms and medical history.

Plan a wind-down routine that allows time for light stretching, a warm bath or a brief walk if symptoms start. Keep the bedroom cool and reserve the bed for sleep where possible. For long periods of sitting, schedule movement breaks and note whether particular drinks, foods or activities make symptoms more noticeable.

Repeated sleep disruption can affect concentration, mood, energy and daily functioning. It may also make it harder to manage other long-term health concerns. Reassessment is worthwhile when symptoms change, treatment causes troublesome effects or sleep remains poor despite self-care measures.

Not every case can be prevented, but regular sleep habits, moderate daily movement and attention to iron status can reduce avoidable contributors. Avoiding personal triggers in the evening may help. A clinician can advise whether pregnancy, kidney disease or a medicine warrants a more specific prevention plan.

A GP can assess symptoms, review medicines and arrange initial blood tests. Referral may be considered when the diagnosis is unclear, symptoms remain disruptive or another neurological, sleep or kidney condition needs input. Share the effect on sleep and daily life so the care plan reflects the full impact.