If you live with anxiety, depression or stress, you will know how much a poor night’s sleep can affect the next day. Add uncomfortable legs to the mix and bedtime can become something to dread. Two common causes of night-time leg discomfort are restless legs syndrome (RLS) and leg cramps. They can feel alike at 2am, but they are different. Understanding which one you are experiencing can help you describe it clearly to your GP.
What Does Restless Legs Syndrome Feel Like?
The urge to move
RLS causes a strong need to move your legs, often with an unpleasant feeling that is hard to describe. People often say it feels like something crawling under the skin, or a deep ache inside the legs. It may affect one leg or both, and it can be difficult to pinpoint exactly where it is.
When it tends to appear
RLS symptoms usually begin or worsen when you are resting, such as sitting or lying in bed. Walking, stretching or moving your legs often eases them, though relief may last only while you keep moving. Symptoms are typically worse in the evening or at night, which is why RLS can make it hard to fall asleep or get back to sleep.
What Does a Night-Time Leg Cramp Feel Like?
A leg cramp is a sudden, painful tightening or spasm of a muscle. Unlike RLS, the pain is usually easy to locate, and it commonly affects just one leg. Cramps can wake you from sleep, and stretching the muscle may help it release. A cramp is not defined by an urge to move, by getting worse during rest, or by being more common in the evening. It can also happen at any time of day.
RLS vs Leg Cramps: Key Differences at a Glance
| Restless legs syndrome | Leg cramp | |
| Main feeling | Urge to move, with an unpleasant sensation | Sudden, painful muscle tightening |
| Rest | Starts or worsens during rest | Marked by a spasm, not by rest |
| Movement | Eases symptoms while you keep moving | Stretching may release the muscle |
| Time of day | Mainly evening or night | Can happen at night or any time |
| Location | Hard to pinpoint; one or both legs | One clear area, often one leg |
| Duration | Returns when you rest again | Seconds, up to a few minutes |
| Effect on sleep | Hard to fall asleep or return to sleep | Wakes you with sudden pain |
Why This Matters for Mental Health and Sleep
The sleep and mood cycle
Poor sleep and mental health influence each other. Low mood and anxiety can disturb sleep, and disturbed sleep can make low mood and anxiety harder to manage. Leg symptoms that keep you awake can quietly feed this cycle, so it is worth taking them seriously rather than putting up with them.
A note on zopiclone and sleeping tablets
Some people who struggle to sleep are prescribed medicines such as zopiclone. In the UK this is a prescription-only medicine, generally intended for short-term use, and it should only be taken as directed by your prescriber. Sleeping tablets can cause drowsiness the next day, and dependence can develop. Zopiclone is not a treatment for restless legs or cramps, so if leg symptoms are the real reason you are awake, a sleeping tablet may not address the cause. Never start, stop or change a prescribed medicine without speaking to your GP or pharmacist. Some medicines used for mental health, including certain antidepressants, can also make RLS symptoms worse in some people, so tell your doctor everything you are taking.
Could it be sleep apnoea?
Not every broken night comes from your legs. Obstructive sleep apnoea, where breathing repeatedly pauses during sleep, can cause loud snoring, gasping, unrefreshing sleep and daytime tiredness. These symptoms can overlap with low mood and poor concentration, so sleep apnoea is sometimes overlooked. If a partner has noticed pauses in your breathing, or you wake exhausted despite a full night in bed, mention it to your GP. This is particularly important if you have been offered sedative medicines, as some can affect breathing during sleep.
Can You Have Both RLS and Leg Cramps?
Yes. Some people experience both and can learn to tell them apart. Treat each episode on its own and ask yourself:
- Was there a strong need to move, or did a muscle suddenly become tight and painful?
- Did it start while I was resting?
- Did movement help only while I kept moving?
Questions to Consider Before Seeing Your GP
A short list of notes can make a short appointment far more useful. Think about:
- Do you feel a strong need to move your legs?
- Does a muscle suddenly become tight or painful?
- Do symptoms start or worsen when you sit or lie down?
- Does walking or stretching help, and for how long?
- Are symptoms worse in the evening or at night?
- Is the feeling spread out, or can you point to one painful spot?
- Does it stop you falling asleep, or wake you up?
Keeping a brief sleep diary for a week or two, noting what you felt, when, and what helped, gives your GP a clearer picture.
When to Speak to a Professional
Getting help in the UK
Speak to your GP if leg discomfort or pain is disturbing your sleep or worrying you. Because cramps can mimic RLS, an accurate diagnosis depends on your pattern of symptoms and on ruling out other causes. You can also call NHS 111 for advice, or contact charities such as Mind or Restless Legs UK for information. If low mood or anxiety is overwhelming, your GP can discuss talking therapies, and in a crisis you can call Samaritans free on 116 123 at any time.
Conclusion
Restless legs syndrome and leg cramps can both ruin a night’s sleep, but they feel and behave differently. RLS brings an urge to move that worsens with rest, mainly in the evening and at night. A cramp is a sudden, painful muscle spasm that is usually easy to locate. Sleep apnoea and sleeping tablets such as zopiclone add further pieces to the puzzle, which is why a proper conversation with your GP matters. If your sleep and mental wellbeing are suffering, you do not have to manage alone. Note down your symptoms, book an appointment, and ask for help.
