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Don't you want to let your legs rest at night? Let's learn about Restless Legs Syndrome (RLS)

MBBS
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📅 Updated: Jul 14, 2026 • ⏱ 5 min read • Editorial policy
Don't you want to let your legs rest at night? Let's learn about Restless Legs Syndrome (RLS)
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When you go to bed at night to get a good night's sleep, do your legs just start to twitch? Do you feel an inexplicable discomfort, a tightness, a feeling of wanting to move your legs? Does this cause you to toss and turn and eventually lose sleep altogether? If you have experienced this, you are not alone. It is a condition that affects many people, but is not talked about much. Today we are going to talk about the possible cause of this condition, called Restless Legs Syndrome (RLS) , and how a doctor can diagnose it.

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Why do we need to talk to the doctor about this?

Many people think that this is just a minor ache in the legs, or something that comes from fatigue. So they don't think that they need to tell a doctor about it. But in fact, this is a condition that can greatly affect your sleep, your daily activities, and even your mental health.

When you go to see the doctor, he will ask you a few questions.

  • Does anyone in your family have this? Sometimes RLS can run in families, so it's important to find out if your mother, father, or siblings have these symptoms.
  • Do you feel tired and sleepy during the day? One of the main consequences of RLS is excessive sleepiness and fatigue during the day due to not sleeping well at night (insomnia).
  • When does the urge to move your legs occur? The doctor will ask if this discomfort is worse at night, especially when you are resting (for example, watching TV, going to bed).
  • Do you have someone you sleep with? If so, you can ask them if you are jerking your legs or tossing and turning in your sleep. This information is also very important for diagnosis .

Remember, many people don't realize that this strange sensation in their legs is the cause of their insomnia. So if you're having this kind of discomfort, definitely tell your doctor. It's a big clue to finding the disease.

What tests are used to diagnose RLS?

The important thing here is that there is no specific blood test or scan that can immediately prove that you have RLS. The diagnosis depends mainly on the symptoms you tell your doctor.

At the same time, your doctor should check for other underlying medical conditions that may cause symptoms similar to RLS or make RLS worse.It is recommended to do several tests, as there can be many other reasons for sleep disturbances.

Here are some such tests and what they look for.

Test type What is being tested?
Blood Tests
  • Complete blood count (FBC): Checks the number of blood cells and hemoglobin levels. This can help determine if you have anemia .
  • Serum Ferritin: Measures the amount of iron stored in the body. Iron deficiency is a major cause of RLS.
  • Kidney and liver function: Conditions such as kidney disease can cause RLS.
  • Thyroid hormones: Problems with the functioning of the thyroid gland are sometimes related to this.
  • Blood Sugar: Uncontrolled diabetes mellitus can damage nerves and cause RLS symptoms.
Nerve Studies If your doctor thinks you have symptoms of neuropathy , such as numbness or tingling in your legs, they may order tests like EMG (Electromyography) and Nerve Conduction Studies. These check to see if the nerves in your legs are functioning properly.
Sleep Study This is called Polysomnography.This test is usually done in a hospital, while you are sleeping overnight. Your brain waves, heart rate, breathing, and especially your leg movements are monitored while you sleep. This test is especially important if you continue to have sleep problems despite treatment.

Identifying underlying causes

Imagine that your blood test shows that your iron levels are very low. Then your doctor may prescribe you iron pills. Once your iron levels are back to normal, RLS symptoms often go away completely. Similarly, if you have underlying conditions like diabetes or kidney disease, controlling those conditions can also help control RLS symptoms.

This means that RLS is not just a problem with your legs, but it can also be a sign of something else going on in your body. That's why it's important to see a doctor to find the exact cause, rather than ignoring the symptoms.

💡 Take-Home Message

  • Restless Legs Syndrome (RLS) is not something you have imagined, it is a real medical condition.
  • The diagnosis depends largely on the description of your symptoms, so tell your doctor exactly what you're feeling, without hiding anything.
  • Although there is no single test to prove that you have RLS, tests can be done to look for underlying causes, such as iron deficiency and diabetes.
  • If you have these symptoms, definitely seek medical advice. Do not self -treat or ignore them.
  • With proper diagnosis and treatment, you can control this discomfort and enjoy a comfortable sleep.
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⚠️ Important: Medical articles and information on Nirogi Lanka are strictly for educational and awareness purposes and do not substitute professional medical advice, diagnosis, or treatment. Always consult a qualified physician for any medical concerns.