The short explanation
What you describe sounds like restless legs syndrome: an urge to move the legs, often with uncomfortable crawling or tingling feelings, that is worse in the evening and at rest and eases when you move. Low iron is one well-known link, and checking iron stores (ferritin) is one of the first things a clinician will usually do. It is also more common in pregnancy, with kidney problems, and with some medicines, including certain antihistamines and antidepressants.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Low iron is common in women because of periods and pregnancy, and restless legs can occur even when haemoglobin is normal but iron stores are low. That is why the test asked for matters.
- Many people find walking, stretching, massage, a warm bath and cutting back on caffeine and alcohol in the evening help. Iron tablets are not something to start on your own: too much iron causes harm, and the right amount depends on your results.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you whether you have restless legs syndrome, whether your iron is low, or whether you need treatment. Those need an assessment and blood tests.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Could this be restless legs syndrome?
- Can my ferritin and iron be checked, not just my haemoglobin?
- Could any of my medicines be making it worse?
- If my iron is low, what is causing it, and how should it be treated?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
- Get emergency care now (call 112 or 108) for one leg that is suddenly swollen, red, hot and painful together with breathlessness or chest pain.
- See a clinician within days for one swollen, painful calf, sudden weakness in a leg, or numbness that is spreading.
- Book a routine appointment for restless legs that are disturbing your sleep, especially with heavy periods or tiredness.
Sources
The evidence this explanation is built on.
- Restless legs syndrome NHS
- Restless legs MedlinePlus (US National Library of Medicine)
- Iron deficiency anaemia NHS
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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