Tingling in the legs? How to manage night-time symptoms

What is restless legs syndrome? 

Restless legs syndrome (RLS) is a neurological condition that causes a strong urge to move the legs, especially at rest. It is characteristic that symptoms occur almost exclusively in relaxed situations such as sitting or lying down and become considerably worse in the evening and at night.

Affected people experience various unpleasant sensations in the legs, such as tingling, pulling, tearing or a feeling of tension. Many describe it as like ants crawling under the skin. Symptoms can occur on one side, both sides or alternating. These sensations are often distressing and tend to appear during quiet moments, for example when watching TV, in the car or while trying to fall asleep. Movement often provides temporary relief, so many people instinctively get up or walk around.

RLS can significantly affect sleep because falling asleep can be difficult and night-time awakenings may occur. In some cases, involuntary leg movements during sleep are present. Symptom severity may fluctuate over time and can increase or decrease in phases.

What causes restless legs?

RLS is linked to changes in the interaction of various neurotransmitters in the nervous system. The dopamine metabolism is of particular interest. Dopamine is involved in the control of movement. Altered activity may be related to the typical symptoms during rest periods. The neurotransmitter is produced in insufficient amounts or not used properly. As a result, motor impulses reach the muscles unfiltered – especially at rest or at night. 

The iron metabolism may also play a role in RLS. Iron is important for the function of nerve cells associated with the dopamine system. Some people with RLS are found to have low iron status, which is linked to the condition.

A distinction is made between idiopathic and secondary RLS. In idiopathic RLS there is no clearly identifiable underlying disease. However, a family tendency is often observed, which may indicate a genetic predisposition.

In secondary RLS symptoms occur in association with other factors, such as iron deficiency, pregnancy, chronic kidney disease, thyroid dysfunction, rheumatoid arthritis and polyneuropathy. Certain medications can also worsen or trigger symptoms. Examples include beta-blockers for heart problems and tricyclic antidepressants for depression. Triggers such as tiredness, heat, evening alcohol and caffeine up to 8 hours before sleep can all make things worse.

How is restless legs syndrome diagnosed?

The diagnosis of RLS is primarily based on the detailed description of the symptoms. The typical pattern of an urge to move the legs, occurrence at rest and worsening in the evening or at night is decisive. This combination is central to the medical assessment, as there is no single test that definitively proves RLS.

Other possible causes are then investigated. These include in particular iron deficiency or kidney function disorders that can produce similar symptoms. The aim is to exclude other conditions with comparable symptoms.

An L-dopa test can be used as an additional tool in certain cases. Affected people receive the active substance L-dopa. Improvement in symptoms can support the suspicion of RLS, but it is not a definitive proof. A lack of response does not exclude RLS either.

A sleep laboratory examination may also be carried out. Periodic leg movements during sleep can be observed in some people with RLS. However, this finding is not specific and is considered only in the overall context of symptoms.

Are there medications for RLS?

When RLS symptoms are pronounced, medications can be used to relieve symptoms. Treatment is aimed at symptoms, not the underlying cause of RLS. It is mainly used when symptoms cause significant distress.

Commonly used agents include gabapentin, dopamine agonists and levodopa. 

Gabapentin is used to treat RLS and can influence symptoms in many people. Dopamine agonists such as pramipexole, ropinirole or rotigotine act on the dopaminergic system and can reduce symptoms. They are, however, associated with a risk of so-called augmentation, where symptoms may worsen over time or occur earlier in the day.

Levodopa is a precursor of dopamine and is usually combined with benserazide. It can temporarily support dopamine action in the brain but is also linked to an increased risk of augmentation.

If these agents are not sufficiently effective or not tolerated, other medications such as pregabalin or opioids can be considered in certain cases. The appropriate therapy is selected individually according to the symptom profile.

What does a practical plan to relieve symptoms look like?

• RLS is always treated individually. Key factors are how severe your symptoms are and whether a specific trigger is known. This allows therapy to be tailored to your personal situation.
• If iron deficiency is present, adequate iron supply plays an important role in RLS. In confirmed iron-deficiency anaemia, iron supplements or infusions over weeks/months may be recommended. Vitamin C is also important as it can improve iron absorption in the body. 
• Iron-rich foods such as legumes, green vegetables and whole grains support iron intake. Vitamin C sources like peppers, kiwi, broccoli, oranges or sauerkraut further promote iron absorption. A balanced diet thus becomes an important pillar in daily RLS management.
• Caffeine, nicotine and alcohol can exacerbate RLS. Consumption should ideally be reduced, especially in the evening.
• If a medication triggers or worsens RLS, it will be checked whether a change is possible. Prescribed medications should never be stopped independently.
• If RLS occurs during pregnancy, medication is often initially avoided. In many cases symptoms disappear after childbirth.
• Regular, moderate exercise such as swimming or cycling can have a positive effect on symptoms. Intense exertion late in the evening should generally be avoided.
• Small bouts of activity during the day, like short walks or gentle stretching, can also help. Long periods of sitting should be interrupted where possible.
• Relaxation techniques such as yoga, tai chi or targeted stretching can help calm the body. A consistent evening routine can also support sleep.
• Cold or warm applications such as contrast showers or foot baths are often experienced as pleasant. They can help soothe the legs before bedtime.
• Cold or heat stimuli from cooling gels can have different effects individually. It is worth trying to see what feels personally comfortable.
• Gentle massages or rubbing the legs can provide short-term relief. Many people use these methods especially in the evening.
• Each person needs to find out what helps them. As immediate measures, stimulation and movement therapies can be useful, such as infrared light therapy, transcutaneous electrical nerve stimulation, cryochamber with foot-massage devices or training on a vibration board.
• Cryochamber therapy: 3 minutes at -60 °C can work wonders – studies show pain relief, reduced inflammation, relaxed muscles and a strengthened immune system. One study reported marked improvements in RLS with extreme cold.
• Consistent bedtimes and a calm evening routine can help improve sleep. Irregular sleep habits can worsen symptoms.
• Sharing experiences with others who also have RLS can be relieving. Self-help resources can be a major support in coping with RLS and help people manage symptoms better.

RLS can noticeably affect daily life and especially night-time rest. It is essential to know your personal triggers and to find suitable strategies that provide individual support. This includes both medical assessment and practical measures such as exercise, relaxation and a mindful lifestyle. Even if RLS cannot always be completely prevented, many people can achieve significant relief in daily life and improve sleep quality through targeted adjustments.