Sleep

Restless legs at night: why legs won't stay still

An urge to move the legs, worse in the evening and relieved by walking, can be restless legs syndrome — often linked to low iron.

Dr. Kuldeep Budania, MBBS, MD Psychiatry

Updated 11 October 2026 · 3 min read

Restless legs syndrome (RLS) is a sleep-related movement disorder that makes it hard to fall asleep.

People describe crawling, pulling or aching feelings deep in the legs.

Key concepts

  • Symptoms worsen at rest and in the evening
  • Moving or walking gives relief
  • Iron levels should be checked

Symptoms and signs

  • Strong urge to move the legs when lying down
  • Uncomfortable sensations relieved by stretching
  • Leg jerks during sleep noticed by family

Causes

  • Low iron stores
  • Family tendency
  • Kidney disease or nerve problems

Risk factors

  • Pregnancy
  • Some antidepressants, antihistamines and antipsychotics
  • Caffeine, alcohol and smoking

Evidence-based management

  • Blood tests for iron and other causes
  • Review of current medicines with your doctor
  • Leg stretches, walking and warm baths in the evening
  • Specific medicines when symptoms are frequent and severe

When to seek professional help

  • Symptoms several nights a week
  • Started after a new medicine
  • Daytime sleepiness affecting work, study or driving

Frequently asked questions

Is restless legs a psychological problem?

No, it is a neurological sleep disorder, but it often causes insomnia, anxiety and low mood.

Can my antidepressant cause it?

Some can. Discuss with your psychiatrist rather than stopping on your own.

Medical references

Guidelines and official sources used for this article.

  1. ICD-11 for Mortality and Morbidity Statistics. World Health Organization.
  2. Behavioral and psychological treatments for chronic insomnia disorder in adults: an American Academy of Sleep Medicine clinical practice guideline. Journal of Clinical Sleep Medicine, 2021.
Author
Dr. Kuldeep Budania, MBBS, MD Psychiatry
Medical reviewer
Dr. Kuldeep Budania, MD Psychiatry
Last reviewed

This article is for general information and is not a substitute for personal medical advice.

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