Restless legs syndrome (RLS) produces an almost irresistible urge to move our legs as we try to relieve symptoms that can vary from annoying to intolerable. It affects around one in 10 of us, and it occasionally runs in families.
It’s often linked to pregnancy, medicines (such as antihistamines), lifestyle (see box) and medical conditions, including iron and other vitamin/chemical deficiencies, diabetes, kidney, thyroid or Parkinson’s, rheumatoid arthritis and fibromyalgia. But in many cases, the underlying cause isn’t clear, although it may be linked to low levels of dopamine, a chemical messenger (neurotransmitter), in brain areas that control movement. Levels are naturally lower in the evening, which is when symptoms often occur.
The symptoms
RLS produces burning, itching, crawling, tickling, throbbing or other odd sensations in the feet, calves, thighs…