Understanding Restless Legs Syndrome: Causes, Symptoms, and Treatment Options

Alan Lucks | MD

Medically reviewed by Alan Lucks | MD, Alan Lucks MDPC Private Practice - New York on January 17th, 2024.

Key Takeaways

  • This neurological disorder affects up to 10% of Americans and typically worsens with age, causing an irresistible urge to move legs due to uncomfortable sensations like crawling, tingling, or aching.
  • Symptoms follow a distinct pattern—they worsen during evening hours and periods of rest, often disrupting sleep between 10 PM and 4 AM when dopamine levels naturally drop.
  • Iron deficiency is present in 25% of cases, and ferritin levels below 50 ng/mL can trigger symptoms even when standard blood tests show normal iron levels.
  • First-line medications include dopamine agonists like pramipexole (starting at 0.125mg) and ropinirole, though these can cause augmentation—worsening symptoms over time in 30-60% of patients.
  • Diagnosis requires meeting five specific criteria including urge to move legs, symptoms worse at rest, temporary relief with movement, circadian pattern, and ruling out other conditions like neuropathy.

Restless legs syndrome (RLS), also known as Willis-Ekbom disease, is a nervous system disorder that causes an irresistible urge to move your legs. It is considered a sleep disorder because symptoms often worsen when you are at rest, making it difficult to sleep or sit for long periods. RLS affects up to 10% of people in the U.S., with women and middle-aged individuals being more likely to experience severe symptoms.

Causes of Restless Legs Syndrome

The exact cause of RLS is unknown, but several factors may contribute to the development of the condition, including:

  • Genetics: Nearly half of the people with RLS have a family member with the condition.

  • Chronic diseases: Certain long-term medical conditions, such as iron deficiency, Parkinson's disease, kidney failure, diabetes, and peripheral neuropathy, can include RLS symptoms.

  • Medications: Some drugs, like anti-nausea meds, antipsychotics, antidepressants, and antihistamines, may worsen symptoms.

  • Pregnancy: Some women experience RLS during pregnancy, especially in the last trimester.

  • Lifestyle factors: Lack of sleep, alcohol, tobacco, and caffeine use can trigger or worsen symptoms.

Symptoms of Restless Legs Syndrome

People with RLS experience unusual sensations in their legs, such as itching, crawling, pulling, aching, throbbing, or pins and needles, along with a strong urge to move their legs to relieve the discomfort. Symptoms can range from mild to severe and may come and go or vary in intensity between episodes. They are generally worse in the evening and at night, but often improve in the early morning.

Understanding Restless Legs Syndrome: Causes, Symptoms, and Treatment Options

Diagnosing Restless Legs Syndrome

There is no specific medical test for RLS, so doctors rely on a patient's description of symptoms and a physical examination to make a diagnosis. The five basic criteria for diagnosing RLS include:

  1. An overwhelming urge to move the legs, often accompanied by uncomfortable sensations

  2. The urge starts or worsens during rest

  3. The urge is relieved, partially or totally, by movement

  4. The urge worsens in the evening or at night

  5. The symptoms are not caused by another condition, such as leg cramps or arthritis

Your doctor may also order lab tests to rule out other conditions or a sleep study to check for other sleep disorders that might cause RLS.

Treatment Options for Restless Legs Syndrome

While there is no cure for RLS, treatments can help control symptoms and improve sleep quality. Treatment may include:

  • Lifestyle changes: Regular exercise, following a sleep schedule, and avoiding caffeine, alcohol, and tobacco can help manage mild to moderate RLS.

  • Non-drug therapies: Leg massages, hot baths, heating pads, or ice packs may provide relief.

  • Medications: Dopaminergic drugs, benzodiazepines, narcotic pain relievers, iron supplementation, and anticonvulsants may be prescribed to treat RLS symptoms.

It is essential to work closely with your doctor to find the most effective treatment plan for your individual needs. If you experience frequent sleep loss, depression, anxiety, or difficulty concentrating due to RLS, consult your doctor for further guidance.

Living with Restless Legs Syndrome

RLS is a lifelong condition that may worsen with age, but some people experience periods of remission. To better cope with RLS, consider joining a support group or seeking help from a mental health professional if you feel overwhelmed. Maintaining open communication with your doctor and implementing lifestyle changes can also help you manage your symptoms and improve your quality of life.

For more information on restless legs syndrome, visit the following resources:

The Bottom Line

While there's no cure, most people find significant relief through iron supplementation when deficient, sleep hygiene improvements, and carefully managed medications. Early treatment prevents symptom progression and sleep disruption that affects quality of life. If you're experiencing uncomfortable leg sensations that worsen at night, Doctronic can help evaluate your symptoms and determine the best treatment approach.

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