Short answer · Medically reviewed summary · Last updated: 2026-04-06
Restless Leg Syndrome (RLS), also known as Willis-Ekbom disease, was first formally described in the 17th century by the English physician Thomas Willis, though it remained largely misunderstood by the medical community for hundreds of years. From Willis to Ekbom In 1672, Dr. Thomas Willis provided the first clinical description of the symptoms we now identify as Restless Leg Syndrome, noting patients who experienced "anxietas tibiarum" or "restlessness of the legs" that prevented sleep.
What is the history of Restless Leg Syndrome?
History of Restless Leg Syndrome: when and how it was discovered, and the milestones in research since, medically reviewed.
Restless Leg Syndrome (RLS), also known as Willis-Ekbom disease, was first formally described in the 17th century by the English physician Thomas Willis, though it remained largely misunderstood by the medical community for hundreds of years.
From Willis to Ekbom
In 1672, Dr. Thomas Willis provided the first clinical description of the symptoms we now identify as Restless Leg Syndrome, noting patients who experienced "anxietas tibiarum" or "restlessness of the legs" that prevented sleep. However, the condition remained an obscure footnote until 1945, when Swedish neurologist Karl-Axel Ekbom published a comprehensive study of 34 patients. Ekbom’s work provided the rigorous clinical characterization necessary to define Restless Leg Syndrome as a distinct neurological disorder rather than a manifestation of anxiety or "hysteria," as it had been frequently mislabeled in previous centuries.
Evolution of Understanding and Treatment
For decades, patients suffering from Restless Leg Syndrome were often dismissed by clinicians as suffering from psychological distress. The turning point occurred in the 1960s and 70s with the recognition of the role of iron metabolism and the discovery that dopaminergic medications could alleviate symptoms. This shifted the medical perspective from viewing Restless Leg Syndrome as a psychosomatic issue to recognizing it as a systemic, neurobiological condition. Modern genetics has further revolutionized our understanding, revealing that specific gene variants—such as those involved in iron transport and development—predispose individuals to the disorder.
Advocacy and the Modern Era
The establishment of patient advocacy groups, such as the Restless Legs Syndrome Foundation, transformed the landscape for those living with the condition. These organizations pushed for increased public awareness, helping to validate the lived experience of patients who previously struggled to get a diagnosis. Today, through neuroimaging and genetic mapping, we understand that Restless Leg Syndrome is a complex interaction between brain iron deficiency and dopamine signaling pathways, a far cry from the historical misconceptions that once plagued those suffering from its persistent, nocturnal discomfort.
Medical Disclaimer: This information is for educational purposes only and does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.
References
- NIH Genetic and Rare Diseases Information Center (GARD)
- Orphanet: The portal for rare diseases and orphan drugs
- Restless Legs Syndrome Foundation
- OMIM (Online Mendelian Inheritance in Man)
