Restless legs syndrome is not associated with migraine with aura: a clinical study

Based on recent data about the association between restless legs syndrome (RLS) and migraine, we performed an observational study on the occurrence of RLS in patients affected by “pure” migraine with aura (pMA). We recruited 63 patients (33 females and 30 males) affected by MA without other types of primary headache among all patients referred in five Italian headache centers in a 1-year period. The prevalence of RLS in pMA patients (9.5%) is similar to that observed in Italian headache-free subjects (8.3%). No significant differences were found between pMA patients with and without RLS about clinical features of MA attacks and systemic and psychiatric diseases were investigated. Moreover, no association appeared between RLS and familial cases of MA. Differently from migraine without aura, our data do not confirm the existence of an association between RLS and MA, not even when a genetic factor is involved.

     

Prevalence and characteristics of right-to-left shunt in migraine with aura: a survey on 120 Italian patients

Many lines of research have suggested a relationship between migraine with aura (MA) and patent foramen ovale. Right-to-left shunt (RLS) of blood might explain both the occurrence of MA attacks, as well as the increased risk of ischaemic stroke in these patients. We evaluated the prevalence and the characteristics of RLS in a series of 120 MA patients, who were studied with contrast-enhanced Transcranial Doppler examination. We found RLS in 61 of them. A latent RLS was found in 28%, a permanent RLS in 72%, a shower-curtain pattern was detected in 52% of the studied patients.     

High prevalence of Dopaminergic Premonitory Symptoms in migraine patients with Restless Legs Syndrome: a pathogenetic link?

In order to assess the prevalence of Dopaminergic Premonitory Symptoms (DPS) in migraine patients with Restless Legs Syndrome (RLS), we chose migraine patients from a large Italian clinical headache population previously investigated for an association between primary headaches and RLS. We evaluated a total sample of 164 patients with migraine, in particular 114 with migraine without aura (MO), 10 with migraine with aura (MA) and 40 with MO and MA in various combinations between them or with episodic tension-type headache (ETTH), defined as a “mixed group”. About 20% of all migraine patients referred at least one of the following DPS: yawning, nausea, somnolence or food craving, confirming data already indicated in the literature. Among migraine patients with RLS (25.6%), DPS were referred from about half of the patients (47.6%) compared to those without RLS (47.6% vs. 13.1%; p<0.001). Based on migraine subtype, patients with MO referred DPS (26.3%) more frequently compared to the MA group and “mixed group” (12.0%, p<0.05), particularly in the presence of RLS (63.0% vs. 20.0%, p<0.01). No statistical differences were found between clinical and demographic data of the subgroups or related to medical conditions investigated (anxiety, depression, sleep disorders, body mass index). It is interesting that the chances of having RLS in migraine patients were more than 5 times higher in the presence of DPS. These results could support a hypothetical dopaminergic imbalance in RLS and migraine, as the dopamine is involved in the pathogenesis of both disorders and it is responsible for the migraine DPS reported above.     

The extent of right-to-left shunt fails to correlate with severity of clinical picture in migraine with aura

Abstract Several investigations have documented an increased incidence of right-to-left shunt (RLS) in migraine with aura (MA) and have emphasised its role in the physiopathology of aura; so far, however, no data are available concerning a possible correlation between the extent of the RLS and the clinical picture of MA patients. To investigate the possible relationship between the extent of the RLS, revealed by the number of microbubbles (MB) detected during transcranial Doppler with IV injection of ultrasound contrast (TCDc), and the clinical characteristics of MA (age at first onset of migraine, mean annual frequency of attacks and mean duration of the aura phase), 30 consecutive patients with typical aura and migraine headache positive on TCDc evaluation for RLS were enrolled. Permanent RLS was found in 12 patients and latent RLS was found in 18 patients; of these, 6 had a high-grade RLS, 5 medium-grade RLS and 7 low-grade RLS. No correlation has been documented between the number of MBs and the clinical parameters of both patients with latent shunts and those with permanent ones, nor between the clinical parameters of the two groups of patients. These data show that RLS does not seem to affect the clinical manifestation of MA and that the extent of RLS fails to correlate with the severity of the clinical picture of the disorder.     

Restless legs syndrome and primary headaches: a clinical study

Based on recent data about the association between restless legs syndrome (RLS) and migraine, we performed an observational study on the occurrence of RLS in patients affected by primary headaches. Two hundred headache patients (149 women and 51 men) and 120 (90 women and 30 men) sex-and age-matched control subjects were included. In the headache group, migraine without aura (MO) was the most represented headache type (n=114), followed by the “mixed” group (n=40) with MO, migraine with aura (MA) and frequent episodic tension-type headache (ETTH) in various combinations, and by ETTH alone (n=22). The remaining patients suffered from MA alone (n=10 MA), episodic cluster headache (ECH n=12) and primary stabbing headache (n=2). RLS frequency was significantly higher in headache patients than in control subjects (22.4% vs. 8.3, p=0.002) independently of sex, although with a female preponderance (84%) in both groups. More than 60% (n=27) of RLS patients were affected by MO and 30% (n=13) by a combination of two headache types (p≥0.001), with a very low frequency of RLS for the other types of headache. No RLS patient had ECH. No statistical differences were observed among clinical characteristics of different types of headache in groups with and without RLS. In both headache and control groups, higher scores for depression and anxiety were more frequent in subjects with RLS compared with those without RLS. Furthermore, headache patients with RLS reported sleep disturbances more frequently compared to those without RLS (50.0% vs. 32.7%; p<0.0001) and showed a normal or underweight body mass index. Our data seem to confirm the existence of an association between RLS and primary headaches, particularly with migraine, as already demonstrated. The absence of RLS in ECH patients is very interesting. Many pathogenetic considerations about links between RLS and primary headaches could be given, the most fitting involving dopamine and melatonin.     

对比增强经颅多普勒对隐源性缺血性卒中和先兆性偏头痛患者与右向左分流不同分流量相关性的研究

目的 对隐源性缺血性卒中和先兆性偏头痛患者的右向左分流阳性率及分流量进行对比分析,研究二者之间右向左分流的特征及可能的发病机制.方法 连续入组48例隐源性缺血性卒中患者、42例先兆性偏头痛患者、33例健康志愿者做为对照组,使用对比增强经颅多普勒诊断右向左分流,并根据分流量进行分级,对3组的右向左分流阳性率和不同分级进行...     

Time course of arousal response during periodic leg movements in patients with periodic leg movements and restless legs syndrome.

OBJECTIVE: The temporal evolution of periodic leg movements (PLM) and the relationship of their arousing effect on sleep episode has not been extensively investigated. We studied the nocturnal evolution of PLM associated or not with microarousal (MA) and associated with slow wave activity (PLM with slow wave activity) in 23 patients with PLM and/or restless legs syndrome (RLS). METHODS: All subjects had PLM associated with MA or with slow wave activity as well as without MA and all slept for 4 sleep cycles. Spectral electroencephalogrpahic (EEG) analysis was done for the 4 sleep cycles to assess the nocturnal variation in slow wave activity (SWA). RESULTS: Sixty percent of PLM were associated with MA, 4% were associated with slow wave activity whereas 36% showed no EEG changes. There was a clear prevalence of PLM with MA in stages 1 and 2 while PLM without MA were prevalent in slow wave sleep. The night-time PLM index progressively declined from the first to the last sleep cycle (P<0.005), without differences between PLM types, or between PLM and RLS patients. The decline of PLM duplicated the temporal trend in SWA over consecutive sleep cycles. CONCLUSIONS: PLM showed a typical pattern of progressive decline throughout the night following the exponential decline in SWA. These over-time variations occurred independently of changes in the rate of PLM associated or not with MA or associated with slow wave activity, suggesting that variations in arousal threshold and sleep propensity did not affect the PLM arousing effect. The PLM-related arousal response might be affected by interaction of circadian and sleep stage influences with the addition of sleep oscillatory processes.     

Restless legs syndrome is a common feature of adult celiac disease

Restless legs syndrome (RLS) is a common neurological condition, frequently idiopathic, sometimes associated with specific disorders such as iron deficiency. We investigated RLS prevalence in celiac disease (CD), an autoimmune disease characterized by several features such as malabsorption‐related iron deficiency anemia and peripheral neuropathy. We screened a population of 100 adult CD patients for CD features, iron metabolism, clinical and neurological conditions, and enrolled 100 age‐ and sex‐matched controls in the general population. RLS was ascertained in CD patients and controls by both the presence of the four essential International RLS Study Group diagnostic criteria and neurological examination. The International RLS Study Group rating scale was used to measure RLS severity. We found a 31% prevalence of RLS in the CD population that was significantly higher than the prevalence in the control population (4%; P < 0.001). The average severity of RLS in CD population was moderate (17 ± 6.5). In the CD population, no significant correlation was found between RLS and either gluten‐free diet or iron metabolism, despite hemoglobin levels were significantly lower in CD patients with RLS than without RLS (P = 0.003). We found no correlation between RLS and other possible causes of secondary RLS, including signs of peripheral neuropathy, pregnancy, end‐stage renal disease, and pharmacological treatments.Our study broadens the spectrum of neurological disorders associated with CD and indicates that RLS should be sought for in all patients with CD. © 2010 Movement Disorder Society     

Altered white matter integrity in primary restless legs syndrome patients: diffusion tensor imaging study

Abstract

Objectives:

A prior diffusion tensor imaging (DTI) of restless legs syndrome (RLS) subjects found alterations in brain white matter (WM). The aim of this study was to explore the possible mechanism of altered integrity of brain WM in RLS patients.

Methods:

The DTI measurement was performed in 22 subjects with RLS and 22 age-matched control subjects. Using a voxel-based analysis, fractional anisotropy (FA) and axial and radial diffusivities (AD and RD) were compared between RLS and control subjects with a two-sample t-test, and correlation analysis was performed in RLS subjects.

Results:

RLS subjects demonstrated decreased FA in the genu of the corpus callosum and frontal WM adjacent to the inferior frontal gyrus compared with the control subjects. For areas of decreased FA, both the AD and RD were higher than that in the control subjects.

Discussion:

Our findings suggest that loss of axonal density and myelin may account for WM changes seen in a prior study of RLS subjects.     

中国偏头痛患者右向左分流阳性率及分流类型——一项全国多中心研究

背景 偏头痛与右向左分流（right-to-left shunt,RLS）的关系尚有争议。本研究旨在明确中国偏头痛 患者右向左分流的阳性率、分流类型以及分流量大小,分析偏头痛与右向左分流的关系。 方法 该研究为多中心-病例对照研究（北美临床研究注册号NCT0242569)。由中国9家分中心共同完 成,连续纳入2015年6月-2016年8月就诊于分中心且符合据第三版国际头痛疾病分类-β测试版（The International Classification of Headache Disorders 3rd Edition Beta Version,ICHD-3β）诊断偏头痛的患 者（18～65周岁）,为偏头痛组。偏头痛组共纳入931例（女性695例）,其中先兆偏头痛240例（女性174 例）,无先兆偏头痛691例（女性521例）。健康对照组共282例。 结果 先兆偏头痛组RLS阳性率和大量分流比例高于无先兆偏头痛组（63.7% vs 39.9%,P＜0.001; 32.1% vs 16.5%,P＜0.001）,两组中量和小量分流比例无差异（P =0.141;P =0.061）。无先兆偏头痛 组RLS阳性率和大量分流比例高于对照组（39.9% vs 29.4%,P＜0.001;16.5% vs 6.4%,P＜0.001）, 两组间中量和小量分流的比例无差异。 结论 偏头痛患者（包括有先兆和无先兆偏头痛患者）,右向左分流阳性率高于正常对照组,且以大 量右向左分流为主,中至小量右向左分流及分流的类型与对照组相比无差异。右向左分流,特别是大 量的右向左分流,可能与偏头痛有关。     

Clinically significant but unsuspected restless legs syndrome in patients with sleep apnea.

In this prospective study, the prevalence of clinically significant restless legs syndrome (RLS) with symptoms at least 2 to 3 days per week was 8.3% in 60 sequentially polysomnographically studied patients with clinically significant sleep apnea (Apnea Index score > 5 or Respiratory Disturbance Index score > 10). Age-matched spouses were used as a control group and showed a comparable prevalence of RLS at 2.5% (not significant). Although RLS appears to be only slightly more common in sleep apnea patients than in controls, the importance of this study lies in the fact that clinically significant RLS occurred in 1 of every 12 patients with sleep apnea and, in every case, the RLS was unsuspected before polysomnography. We recommend that all patients undergoing polysomnography to rule out sleep apnea be screened for the symptoms of RLS. We have found the MEMO-NIH consensus conference questionnaire administered at the time of polysomnography to be useful in this regard.     

Prevalence of restless legs syndrome in Trabzon in the northeast Black Sea Region of Turkey: co-morbidities,socioeconomic factors and biochemical parameters

Abstract

Objectives:

Factors including heritability, climate features, co-morbid diseases and methodological differences between studies may underlie variation in the prevalence of restless legs syndrome (RLS). The purpose of this study was to assess the prevalence of RLS in Trabzon and to evaluate associated factors by including biochemical investigations.

Methods:

This community-based study was conducted among a random sample of 3789 adults. The criteria suggested by the International RLS Study Group were used in the assessment of RLS. Individuals responding affirmatively to at least one question were interviewed and examined by neurologists for definitive diagnosis of RLS. Age- and gender-matched RLS-negative individuals were enrolled in the control group. Blood samples from RLS patients and control subjects were collected after 12-hour fasting to evaluate fasting blood glucose, ferritin, vitamin B12, folic acid and creatinine.

Results:

The prevalence of RLS was 4.5%. Age, female gender and educational level were identified as independent risk factors for RLS. Peak prevalence rates were observed in the fourth decade in women and in the sixth decade in man. A familial history of RLS, low ferritin and vitamin B12 levels and multiparity were more common in women with RLS. Fasting blood glucose, folic acid and creatinine levels were not significantly different between the patients and controls.

Discussion:

The prevalence of RLS is relatively consistent in different regions of Turkey. Women with RLS may have different risk factors from men with RLS that may lead to increased prevalence at earlier ages. Low socioeconomic status may also affect the prevalence of RLS.     

Fabry disease in patients with migraine with aura

Anderson-Fabry disease (AFD) is an X-linked recessive lysosomal disease caused by alpha-galactosidase A (alpha-gal) deficiency, causing progressive glycosphingolipid storage in various organ systems. Headache is a frequent symptom. Cerebral magnetic resonance imaging (MRI) often shows multiple white matter lesions (WML), like those seen in patients affected by migraine, in particular with aura (MA). To our knowledge, there are no reports about the prevalence of AFD in patients with MA. The objective of the study was to determine AFD prevalence, as assessed by alpha-gal activity and genetic tests, in MA patients. We evaluated 73 consecutive patients followed by the Headache Centre of our Department with a diagnosis of MA. They were screened for migraine characteristics and cerebrovascular risk factors. Gaseous contrast transcranial Doppler was used to diagnose right-to-left shunt and MRI to detect WML. All patients underwent blood test to evaluate peripheral alpha-gal activity and to identify alpha-gal gene mutations. Of 73 consecutive screened subjects (59 females, 14 males; mean age 38.3 ± 11.8 years), the known GLA pathologic mutation p.[Asp313Tyr] was found in a 38-year-old woman, with a history of MA, deep venous thrombosis and abdominal pain. Cerebral MRI showed small WML. This is the first study reporting AFD prevalence in a cohort of MA patients. We found a relatively high prevalence (about 1.37%) among the examined patients, even if this finding needs to be confirmed in a larger sample. Despite this high prevalence, it seems not necessary to screen systematically all MA patients for AFD, but since it is a treatable genetic disorder, it is worthwhile to consider it for the subgroup of patients presenting WML and other typical AFD symptoms.

     

The solute carrier family 1 (glial high affinity glutamate transporter), member 2 gene,SLC1A2, rs3794087 variant and assessment risk for restless legs syndrome

ObjectiveA glutamatergic dysfunction has been postulated to play a role in restless legs syndrome (RLS) pathophysiology, as glutamate concentrations have been found to increase in the thalamus of RLS patients. The aim of our study was to investigate the possible association between the single nucleotide polymorphism (SNP) rs3794087 in the solute carrier family 1 (glial high affinity glutamate transporter), member 2 gene, SLC1A2, related with glutamate transport and the risk for RLS.MethodsWe studied the allelic and genotype frequencies of the SNP rs3794087 in 205 patients with RLS and 328 healthy controls using TaqMan genotyping.ResultsThe rs3794087 genotype and allelic frequencies did not significantly differ between patients with RLS and controls and were unrelated with the age at onset of RLS, gender, and family history of RLS.ConclusionsThe results of our study suggest that the rs3794087 polymorphism is not related to the risk for RLS.     

The Impact of Subthalamic Deep Brain Stimulation on Restless Legs Syndrome in Parkinson's Disease

IntroductionThe study aimed at evaluating the effect of subthalamic deep brain stimulation (DBS-STN) on restless legs syndrome (RLS) in Parkinson's disease (PD) patients.Materials and MethodsWe assessed the presence of RLS before and 6 and 12 months after surgery in 36 patients. Differences between patients with RLS, without RLS, and with remission of RLS in terms of sleep measures (interview and validated questionnaires) and nonmotor symptoms (NMS). Polysomnography (PSG) was performed in 24 patients. Simple and multiple regression models were used to identify potential predictors of RLS outcome after DBS-STN.ResultsBefore DBS-STN 14 of the 36 patients (39%) were diagnosed with RLS. DBS-STN resulted in the resolution of RLS in 43% (n = 6) and the emergence of RLS in 2 (9%) patients. During the study, 20 patients remained without RLS and the patients with unremitting RLS (n = 8) experienced alleviation of symptoms. At baseline patients with RLS had higher Non-Motor Symptoms Scale (NMSS) total and sleep domain, Unified Parkinson's Disease Rating Scale (UPDRS) part IV and lower Parkinson's Disease Sleep Scale (PDSS) scores. There were no differences between the groups without and with RLS in terms of PSG recordings.ConclusionDBS-STN provided relief of symptoms in most of the patients with PD and RLS. We found that RLS was associated with worse subjective sleep quality, more severe NMS, and complications of levodopa therapy. DBS-STN may have direct impact on RLS rather than related indirectly through post-surgery change in medications.     

Thalamic Deep Brain Stimulation May Improve Restless Legs Syndrome in Patients With Essential Tremor

ObjectivesTo determine change in restless legs syndrome (RLS) symptoms in essential tremor (ET) patients undergoing bilateral thalamic ventral intermedius (VIM) deep brain stimulation (DBS) surgery.Materials and MethodsWe retrospectively reviewed our database of ET patients with RLS who had undergone VIM DBS for tremor from 2012 to 2020. We reviewed the patients with available International Restless Leg Syndrome Study Group RLS scale scores before and after DBS. Percentage of responders, defined as proportion of patients experiencing three or more point improvement of RLS scores post-DBS, was calculated. We performed two-tailed t-test of pre-DBS and post-DBS RLS scores.ResultsWe identified 13 patients with ET and RLS who had undergone bilateral VIM DBS, of whom nine (69%) were responders post-DBS. Five of 13 patients (38%) had complete resolution of RLS post-DBS. For all patients, mean pre-DBS RLS score was 15.8 ± 7.9 which improved by 46% post-DBS to a mean of 8.5 ± 8.8 (p = 0.007). Four patients rated their RLS scale one night with the stimulator OFF and another night with the stimulator ON. The mean RLS score with stimulator ON was 15.5 ± 7.6 which improved by 53% to a mean of 6.25 ± 7.8 (p = 0.008), with two having complete resolution of RLS with stimulator ON. Of the nine responders, six preferred to keep their stimulator ON at night due to relief of RLS and better subjective quality of sleep.ConclusionsWe report for the first time improvement of RLS in patients with ET after bilateral thalamic DBS. Although many ET patients with nonrechargeable DBS systems switch off their stimulator at night to conserve battery life, those with RLS may potentially benefit from keeping their stimulator ON at night to relieve their RLS.     

Restless legs syndrome in patients with sequelae of poliomyelitis

BackgroundNo studies have examined the association between RLS and the sequelae of poliomyelitis (PM). We studied the frequency and severity of RLS in a group of consecutive patients with the sequelae of poliomyelitis (PM) and the effect of treatment with dopaminergic drugs.MethodsA diagnosis of RLS was made according to the criteria of the International RLS Study Group, and severity was assessed by the RLS rating scale. Information on sex, age, age at onset, site affected by PM, disease duration of PM, and history of post-polio syndrome (pPS) was obtained in a cohort of 52 PM patients.ResultThe mean age was 55.9 ± 6.5 years; 39 patients had post-polio syndrome (75%). RLS was diagnosed in 21 (40.4%) patients. Sixteen of the 21 patients (76.2%) with RLS had pPS, which was similar to the non-RLS group (74.2% patients with pPS). RLS symptoms were very severe in 5 patients, severe in 13, moderate in 2 and mild in 1. Nineteen of the 21 patients with RLS had symptoms predominantly in the more affected lower limb (90% of patients). Sixteen patients received dopaminergic agonist treatment with a significant reduction in their scores on the RLS severity scale from 28.3 ± 4.7 to 6.9 ± 7.3 (p < 0.001).DiscussionRLS occurs frequently in patients with PM, both in those with and without pPS, and responds well to treatment with dopaminergic drugs.     

Prevalence of restless legs syndrome in blood donors

Iron deficiency anemia has been linked to restless legs syndrome (RLS) and regular blood donation may lead to iron deficiency. It has been reported that blood donations may be associated with RLS. A recent study from Sweden found that 25% of the women donors were affected by RLS. However, this type of study has not been replicated in the United States. We conducted a study in our blood donation unit between September and October 2008. To identify those with RLS, we used the RLS diagnostic index questionnaire by Benes et al. The proportion of blood donors with RLS was estimated and the number of blood donations and hemoglobin levels were compared according to RLS status. One hundred and fifty one patients were interviewed; 7 patients who donated only platelets were excluded, leaving 144 patients for analysis. There were 13 (9.0%, 95% confidence interval [CI]: 4.9–14.9%) patients with RLS. Of these, 7 (4.9%, 95% CI: 2.0–9.8%) had possible RLS and 6 (4.2%, 95% CI: 1.5–8.9%) had major or clinically relevant RLS. There was no dramatic association between RLS and number of blood donations or hemoglobin level (all P ≥ 0.21). In our sample of blood donors in the United States, the prevalence of major RLS was 4%. We could not demonstrate an association between RLS and the frequency of blood donation or hemoglobin level in our relatively small sample; a larger sample is needed to better identify any associations. © 2010 Movement Disorder Society     

Restless legs syndrome in chronic inflammatory demyelinating polyneuropathy

The prevalence of restless legs syndrome (RLS) is unknown in chronic inflammatory demyelinating polyneuropathy (CIDP). We prospectively studied 28 patients with CIDP. Prevalence of RLS in CIDP was ascertained by face‐to‐face interview using validated criteria and compared with that in 28 age‐ and gender‐matched controls. Eleven (39.3%) CIDP patients were diagnosed with RLS, compared with 2 (7.1%) controls (P < 0.01). A significant correlation was ascertained between presence of RLS and lower limb weakness, functional disability, and summated compound muscle action potential (CMAP). The prevalence of RLS in CIDP was significantly higher than in controls in our study population, approaching 40%. Screening for RLS in CIDP patients may be appropriate, particularly in those with weakness, disability, and motor axonal loss in the lower limbs. Our findings may otherwise suggest the existence of peripheral components to the pathophysiology of RLS in patients with CIDP. Muscle Nerve, 2010     

Right‐to‐left shunts as a cause of juxtacortical spots in patients with migraine

Backgrounds: Juxtacortical spots on fluid‐attenuated inversion recovery (FLAIR) images can be frequently detected in patients with migraine. However, the origins of the cerebral lesions (including juxtacortical spots on FLAIR images) found in the previous studies are not known. We sought to investigate the association between juxtacortical spots on FLAIR images and right‐to‐left shunt (RLS) in migraine patients. Methods: Juxtacortical spots on FLAIR images were arbitrarily defined as small areas of hyperintensities in the juxtacortex and cortico‐subcortical junction. The presence of RLS was examined by a transcranial Dopper (TCD) with the agitated saline test. The degree of RLS was categorized into four grades according to the number of microemboli: no shunt, <10 microbubbles (MB), >10 MB single spots pattern, and >10 MB shower/curtain pattern. We compared the results for migraine patients (n = 49) with those for healthy controls (n = 49). Results: Juxtacortical spots on FLAIR images occurred in 38/98 subjects; of them, 27/49 (55.1%) had migraines and 11/49 (22.2%) were healthy controls (P = 0.002). The independent factors associated with juxtacortical spots on FLAIR images were female, migraine patients, and RLS by multivariate analysis. In migraine patients, RLS was independently associated with juxtacortical spots on FLAIR images. Conclusion: Our results suggest that juxtacortical spots on FLAIR images were frequently found in migraine patients and might be associated with the presence of RLS in those patients. Further studies are needed to assess whether juxtacortical spots have clinical implications in patients with migraine.