Restless Legs Syndrome (RLS) and Peripheral Neuropathy: What’s the Connection?

Overview

Restless legs syndrome (RLS), also called Willis-Ekbom disease, is a common neurological sleep disorder that causes an uncontrollable urge to move your legs, usually in the evening or at night. Peripheral neuropathy is damage to the nerves outside your brain and spinal cord, often causing tingling, numbness, or pain in the legs and feet. These two conditions frequently overlap: peripheral neuropathy can trigger RLS-like symptoms, and the two are often misdiagnosed as each other, leading to ineffective treatment and poor sleep.

Signs & Symptoms

While RLS and peripheral neuropathy share some leg-related symptoms, there are key differences that can help you tell them apart. Both can cause discomfort that worsens at night and disrupts sleep, but the specific sensations and triggers vary.

Causes & Risk Factors

RLS can be primary (no known cause, often genetic) or secondary, meaning it’s triggered by another condition like peripheral neuropathy, iron deficiency, pregnancy, or certain medications. Peripheral neuropathy is most commonly caused by diabetes (diabetic neuropathy), but can also result from vitamin B12 deficiency, autoimmune disorders, infections, exposure to toxins, or certain chemotherapy drugs. People with a family history of RLS, or who have chronic conditions like diabetes that damage nerves, are at higher risk for both conditions.

Diagnosis

There is no single test for RLS or peripheral neuropathy, so your doctor will diagnose you based on your symptoms, medical history, and a physical and neurological exam. For RLS, your doctor will use the five essential criteria from the International RLS Study Group, which include an urge to move the legs, symptoms that worsen at rest and in the evening, and relief with movement. For peripheral neuropathy, your doctor may order blood tests (to check for diabetes, vitamin deficiencies, or autoimmune markers), nerve conduction studies, or electromyography (EMG) to assess nerve function.

Treatment & Management

Treatment depends on which condition you have, or if you have both. For RLS, first-line treatments include lifestyle changes and, if needed, medications that increase dopamine levels or affect brain chemicals involved in movement. For peripheral neuropathy, treatment focuses on managing the underlying cause (e.g., controlling blood sugar for diabetes, supplementing B12 for deficiency) and relieving nerve pain with medications, physical therapy, or other interventions. If you have both conditions, your doctor will create a combined treatment plan to address both sets of symptoms.

• Lifestyle changes for both conditions: Avoid caffeine, alcohol, and nicotine, which can worsen symptoms. Establish a consistent sleep schedule, and engage in moderate exercise (like walking or stretching) earlier in the day, as vigorous exercise close to bedtime can trigger symptoms.
• Medication options: For RLS, dopamine agonists (like pramipexole or ropinirole) or gabapentin enacarbil are commonly prescribed. For peripheral neuropathy pain, medications like gabapentin, pregabalin, or duloxetine may help. Always discuss side effects and risks with your doctor.
• Non-medication therapies: Leg massages, warm baths, pneumatic compression devices, and cognitive behavioral therapy for insomnia (CBT-I) can help reduce symptoms and improve sleep quality for both conditions.

Living With It

Both RLS and peripheral neuropathy are chronic conditions, but symptoms can be well-managed with the right treatment plan. Joining a support group for people with RLS or neuropathy can help you connect with others who understand your experience. Tracking your symptoms in a sleep and symptom journal can help you and your doctor identify triggers and adjust your treatment plan as needed. Most people are able to significantly reduce their symptoms and improve their sleep quality with consistent management.