Restless Legs Syndrome
Restless legs syndrome (RLS) is a neurological condition that produces an irresistible urge to move the legs, usually accompanied by unpleasant crawling, tingling, or aching sensations. Symptoms typically emerge in the evening or at night and ease briefly when you walk or stretch, making it one of the more disruptive causes of poor sleep. RLS affects people across neurology clinics, where shift-work patterns and long commutes can intensify nighttime symptoms.
Key points
- Sufferers feel a strong compulsion to move the legs, alongside crawling or aching sensations that build in the evening and at night.
- Falling dopamine activity in movement-regulating brain and spinal pathways is thought to generate the restless sensations, worsened by low iron.
- Dopamine agonists such as pramipexole and ropinirole are first-line for moderate to severe cases, started at low doses to limit side effects.
What drives the symptoms
The underlying mechanism involves dopamine signalling in the brain and spinal cord. When dopamine activity falls in the pathways that regulate movement, the legs generate those characteristic restless sensations. Iron deficiency can compound the problem because iron is needed to produce dopamine; low ferritin levels are therefore worth checking at first presentation. Secondary RLS is also seen with pregnancy, kidney disease, and certain medicines.
Managing restless legs syndrome
For moderate to severe RLS, dopamine agonists are the most established treatment. Pramipexole and ropinirole both target dopamine receptors and can significantly reduce symptom frequency and intensity. Starting doses are kept low to minimise the risk of augmentation, a gradual worsening of symptoms that can occur with longer-term use and which should be discussed with a doctor if noticed.
Practical measures also help: keeping a consistent sleep schedule, limiting caffeine and alcohol in the evening, and gentle leg stretches or a warm bath before bed can all reduce symptom severity on a given night.