Circadian rhythm of blood pressure in patients with drug-resistant mesial temporal lobe epilepsy.

OBJECTIVE: To determine whether patients with drug-resistant mesial temporal lobe epilepsy present with an alteration in the autonomic circadian regulation of blood pressure. METHODS: A prospective case‒control study was designed, with a case group comprising patients with drug-resistant mesial temporal lobe epilepsy and a control group comprising healthy volunteers. Twenty-four-hour outpatient blood pressure monitoring was performed to assess the existence of a normal (dipping) or altered (non-dipping) circadian pattern. In addition, analytical and ultrasound parameters (carotid intima-media thickness) of vascular risk and sleep quality were evaluated. RESULTS: Twenty-four subjects were recruited in each study group, amongst whom no demographic differences or history of vascular risk were observed. A higher percentage of participants with a non-dipping pattern was observed in the group of patients with epilepsy (62.5% vs. 12.5, p = 0.001). In the case group, significant differences were also observed in carotid intima-media thickness, with a greater probability of presenting with pathological values (p = 0.022). CONCLUSION: The results suggest a disorder of the central autonomic control of blood pressure in patients with drug-resistant mesial temporal lobe epilepsy, with a greater probability of developing an alteration of the circadian rhythm of blood pressure. This dysfunction may be a factor involved in the increased cardiovascular risk in this population.

Individualised prediction of drug resistance and seizure recurrence after medication withdrawal in people with juvenile myoclonic epilepsy: A systematic review and individual participant data meta-analysis.

Background: A third of people with juvenile myoclonic epilepsy (JME) are drug-resistant. Three-quarters have a seizure relapse when attempting to withdraw anti-seizure medication (ASM) after achieving seizure-freedom. It is currently impossible to predict who is likely to become drug-resistant and safely withdraw treatment. We aimed to identify predictors of drug resistance and seizure recurrence to allow for individualised prediction of treatment outcomes in people with JME. Methods: We performed an individual participant data (IPD) meta-analysis based on a systematic search in EMBASE and PubMed - last updated on March 11, 2021 - including prospective and retrospective observational studies reporting on treatment outcomes of people diagnosed with JME and available seizure outcome data after a minimum one-year follow-up. We invited authors to share standardised IPD to identify predictors of drug resistance using multivariable logistic regression. We excluded pseudo-resistant individuals. A subset who attempted to withdraw ASM was included in a multivariable proportional hazards analysis on seizure recurrence after ASM withdrawal. The study was registered at the Open Science Framework (OSF; https://osf.io/b9zjc/). Findings: Our search yielded 1641 articles; 53 were eligible, of which the authors of 24 studies agreed to collaborate by sharing IPD. Using data from 2518 people with JME, we found nine independent predictors of drug resistance: three seizure types, psychiatric comorbidities, catamenial epilepsy, epileptiform focality, ethnicity, history of CAE, family history of epilepsy, status epilepticus, and febrile seizures. Internal-external cross-validation of our multivariable model showed an area under the receiver operating characteristic curve of 0·70 (95%CI 0·68-0·72). Recurrence of seizures after ASM withdrawal (n = 368) was predicted by an earlier age at the start of withdrawal, shorter seizure-free interval and more currently used ASMs, resulting in an average internal-external cross-validation concordance-statistic of 0·70 (95%CI 0·68-0·73). Interpretation: We were able to predict and validate clinically relevant personalised treatment outcomes for people with JME. Individualised predictions are accessible as nomograms and web-based tools. Funding: MING fonds.

COVID-19 prevalence and mortality in people with epilepsy: A nation-wide multicenter study.

BACKGROUND: To assess the prevalence, severity, and mortality of COVID-19 in people with epilepsy (PWE) and evaluate seizure control in PWE during and after COVID-19. METHODS: Retrospective, observational, multicenter study conducted in 14 hospitals. Medical records of randomly selected PWE followed at neurology outpatient clinics were reviewed. Proportion of PWE with a positive test for SARS-CoV-2 during 2020 was calculated. Risk factors associated with COVID-19 and its morbimortality were evaluated. RESULTS: 2751 PWE were included, mean age 48.8 years (18-99), 72.4% had focal epilepsy, and 35% were drug-refractory. COVID-19 prevalence in PWE was 5.53%, while in the Spanish population was 4.26%. Proportion of admissions to hospital, ICU, and deaths in PWE were 17.1%, 2%, and 4.61% of COVID-19 cases, while in Spanish population were 10.81%, 0.95%, and 2.57%, respectively. A severe form of COVID-19 occurred in 11.8%; dyslipidemia, institutionalization at long-term care facilities, intellectual disability, and older age were associated risk factors. Older age, hypertension, dyslipidemia, cardiac disease, and institutionalization were associated with mortality from COVID-19. Seizure control was stable in 90.1% of PWE during acute COVID-19, while 8.6% reported an increase in seizure frequency. During post-COVID-19 follow-up, 4.6% reported seizure control worsening. CONCLUSIONS: COVID-19 was moderately prevalent in PWE. One out of 5 patients required medical attention and 4.6% died due to COVID-19. Older age, dyslipidemia, institutionalization, and intellectual disability were significant risk factors associated with severe COVID-19. Seizure control remained stable during COVID-19 and throughout long-term follow-up in most PWE who contracted the infection.

Cefalea como motivo de consulta: la visión desde atención primaria / Headache as a reason for consultation: the primary care perspective

Introducción: La cefalea es un motivo de consulta frecuente en atención primaria (AP), sin embargo, se trata de una patología infradiagnosticada e infratratada. Uno de los posibles factores es la falta de formación de los profesionales de AP en cefaleas.MétodosEstudio descriptivo transversal mediante encuesta autoadministrada a los médicos de AP de nuestro sector sanitario. Se recogieron variables sociodemográficas, variables relacionadas con la formación previa en neurología y cefaleas y variables en relación con sus necesidades formativas.ResultadosCompletaron la encuesta 104 médicos de AP, de los cuales el 53% fueron mujeres y la edad media fue 49 años. La mayoría de los encuestados trabajan en un centro de salud urbano (42,3%) y se han formado vía MIR (77,9%). El 65,4% dedica más tiempo a una consulta de cefaleas que a otras consultas y solo un 32,7% utiliza la Clasificación Internacional de Cefaleas. El 68,3% declara tener un interés alto o muy alto en cefaleas y al 75,9% le gustaría mejorar su formación, eligiendo cursos teórico-prácticos y ponencias de actualización como la herramienta más útil. Un 90% utiliza triptanes en su práctica clínica diaria y el 78% emplea tratamientos preventivos. El fármaco más utilizado es amitriptilina y solo un 22,1% elige topiramato.ConclusionesLos profesionales de AP están en contacto constante con pacientes con cefaleas y muestran interés en la formación en esta patología, lo que podría ayudarnos a diseñar programas docentes dirigidos a mejorar la calidad asistencial en este ámbito. (AU)

Introduction: Headache is a frequent reason for consultation with primary care (PC) physicians. However, the condition is underdiagnosed and undertreated. One reason for this may be the lack of specific training on headache in PC.MethodsWe conducted a descriptive cross-sectional study of data gathered with a self-administered survey that was completed by PC physicians from our health district. We collected sociodemographic data and information on previous training in neurology and headache, and training needs.ResultsThe survey was completed by 104 PC physicians, 53% of whom were women; mean age was 49 years. Most respondents worked in urban settings (42.3%) and had been trained via residency (77.9%). Although 65.4% spent more time with patients with headache than with other patients, only 32.7% used the International Classification of Headache Disorders. In our sample, 68.3% of respondents reported a high or very high interest in headache, and 75.9% wished to receive further training on the condition; theoretical and practical courses and update lectures were regarded as the most useful tools. In clinical practice, 90% used triptans and 78% used preventive treatments. The most frequently used drug was amitriptyline; only 22.1% choose topiramate.ConclusionsPC physicians are in frequent contact with patients with headache and show interest in receiving training on this condition. This could be helpful in designing training programmes aimed at improving quality of care in this area. (AU)

Cognitive performance in patients with episodic cluster headache outside and inside the active cluster.

BACKGROUND: Previous studies have shown worse cognitive performance in cluster headache (CH) patients compared to healthy controls; however, little is known about cognitive performance in episodic CH (ECH) patients outside and inside the active cluster (AC). OBJECTIVE: Our aim is to compare cognitive function in ECH patients outside and inside the AC. METHODS: In this cross-sectional, observational study, four neuropsychological tests (Trail Making Test [TMT], Stroop Test [ST], verbal fluency [VF], and Symbol Digit Modalities Test [SDT]) were completed by 21 ECH patients at two different points in time: outside and inside the AC. We also assessed self-reported sleep quality and the presence of anxiety or depressive symptoms. Scores were compared. RESULTS: There was not any difference between the scores of the neuropsychological tests performed outside and inside the AC (TMT-A: 23 vs. 23.5; p = 0.984; TMT-B: 96.5 vs. 85.9; p = 0.104; ST word reading: 101.0 vs. 101.2; p = 0.938; ST color naming: 73.0 vs. 73.4; p = 0.858; ST color word: 44.0 vs. 46.0; p = 0.498; SDMT: 44.0 vs. 44.6; p = 0.961; VF phonemic: 29.5 vs. 30.2; p = 0.714; VF semantic: 20 vs. 21; p = 0.489). We found a worsening in the sleep quality component of the Pittsburgh Sleep Quality Index median scores in patients outside the AC (2 vs. 1; p = 0.046). CONCLUSIONS: Our findings suggest that patients with ECH have a similar cognitive performance outside and during the AC.

Efficacy and tolerability of perampanel as a first add-on therapy with different anti-seizure drugs.

PURPOSE: To investigate the efficacy and tolerability of perampanel (PER) when administered as a first add-on therapy to patients with focal epilepsy or idiopathic generalized epilepsy (IGE) taking one other antiseizure drug (ASD). METHODS: This multicentre, retrospective, one-year observational study collected data from patients (≥12 years) who initiated treatment with PER as first add-on therapy. Patients had to be experiencing inadequate seizure control on ASD monotherapy and tried ≤3 ASD monotherapies before initiating PER. Multivariate logistic regression analyses were performed, adjusted for the number and type of previous seizures, duration and aetiology of epilepsy. RESULTS: Of the 149 patients included in the study (mean age 41 years; 54.4 % male), 118 (79.2 %) were still receiving PER as first add-on treatment after 12 months. Mean PER dose was 6.2 mg/day. At 12 months, 45.6 % were seizure-free and 84.6 % responders. A significant difference in seizure freedom rate was found between patients with IGE and patients with focal epilepsy, but not in responders. Reduced seizure control was observed when PER was administered with strong enzyme-inducing ASDs; conversely, increased seizure control was seen when the same dose of PER was combined with enzyme-inhibiting ASDs. The most frequent adverse events were dizziness (15.4 %), irritability (14.1 %) and drowsiness (14.1 %); no differences in tolerance were observed among different combinations. CONCLUSION: PER demonstrated a good efficacy and safety profile when used as a first add-on therapy in patients who did not respond to monotherapy. PER dose adjustments may optimize seizure control when combined with strong enzyme-inducing or enzyme-inhibiting ASDs.

Myoclonus induced by amoxicillin-clavulanic acid.

•We present a patient in whom myoclonus appeared after initiation of treatment with amoxicillin-clavulanic acid.•Myoclonus and EEG abnormalities disappeared after discontinuation of antibiotic treatment.•This possible adverse effect should be considered to avoid performing aggressive therapeutic maneuvers.

Epilepsia mioclónica juvenil: pronóstico a largo plazo y retirada de tratamiento / Juvenile myoclonic epilepsy: long-term prognosis and antiepileptic drug withdrawal

FUNDAMENTO: La epilepsia mioclónica juvenil (EMJ) es un síndrome epiléptico clásico que carece de consenso pleno sobre la posibilidad de suspensión de tratamiento con fármacos antiepilépticos (FAE). MÉTODO: Estudio observacional, retrospectivo de una serie de pacientes con diagnóstico de EMJ de más de 20 años de evolución, atendiendo a la evolución de aquellos con retirada de FAE. RESULTADOS: Se estudiaron veinte pacientes (edad media 44,1 años, 55% hombres) con EMJ de 30 años de evolución media y edad media al inicio de 14,2 años. El tipo de crisis motora más frecuente fue la combinación de mioclónicas y tónico-clónicas (70%); el 60% de los pacientes llevan más de cinco años libres de crisis. A cuatro pacientes (20%) se les suspendieron los FAE, a dos de ellos con edad media 23 años y un tiempo medio libre de crisis de 7,5 años, que recayeron, y a los otros dos con edad media 39 años y tras 23,5 años libres de crisis, que llevan dos y nueve años sin crisis en la actualidad. CONCLUSIONES: Existe la posibilidad de suspender FAE en pacientes con EMJ con libertad de crisis mantenida en el tiempo. Sugerimos tener en cuenta la edad de suspensión y la existencia previa de un tiempo prolongado de libertad de crisis

BACKGROUND: Juvenile myoclonic epilepsy (JME) is a classic epileptic syndrome that lacks consensus on the possibility of suspending treatment with antiepileptic drugs (AD). METHOD: Retrospective observational study of a series of patients diagnosed with JME with 20 years or more of evolution, focusing on those with withdrawal from AD. RESULTS: The study involved twenty patients (average age 44.1 years, 55% men) with JME of 30 years average evolution and average age at its outset of 14.2 years. The most frequent type of motor crisis was the combination of myoclonic and tonic-clonic seizures (70%); 60% of the patients have been free of seizures for more than five years. Four patients (20%) were withdrawn from AD, two of them with an average age of 23 years and an average time free of seizures of 7.5 years, who relapsed, and the other two with an average age of 39 years and following 23.5 years free of seizures, who currently have been without seizures for two and nine years. CONCLUSIONS: The possibility of withdrawing AD in patients with JME who have been free of seizures over an extended time seems feasible. We suggest taking into account age at withdrawal and prior existence of a prolonged period of time free of seizures

Familial association of genetic generalised epilepsy with limb-girdle muscular dystrophy through a mutation in CAPN3.

•We present a family that includes members with phenotypes of generalized epilepsy and limb-girdle muscular dystrophy.•Subjects with heterozygous mutation developed epilepsy; a subject with homozygous mutation developed limb-girdle dystrophy.•Mutations in CAPN3 may play a role in the complex genetics of genetic generalized epilepsies.

Cognitive Performance in Episodic Cluster Headache.

BACKGROUND: Cluster headache is one of the most disabling of all headache conditions. Although some studies have investigated the psychological profile of patients with cluster headache, research on its impact on cognitive function in patients with episodic cluster headache outside the cluster bout is scant. METHODS: Cross-sectional study to evaluate various aspects of neuropsychological assessment and cognitive function including working memory, selective attention, verbal fluency, and executive function in 40 patients with episodic cluster headache. The patients were compared with 40 age-, gender-, and level of education-matched healthy controls. RESULTS: Episodic cluster headache patients performed significantly worse than healthy controls on all cognitive tests, except for the Interference Score (P = 0.281). They had significantly higher Hospital Anxiety Scale scores (P = 0.002). However, we found no significant association between cognitive performance, anxiety, sleep quality, and disease duration. CONCLUSIONS: Patients with episodic cluster headache outside the bout showed worse executive functioning, working memory, language, and selective attention compared with healthy controls, regardless of the duration of disease or sleep quality.

El hipotálamo en la enfermedad de Huntington / The hypothalamus in Huntington's disease

Introducción. Los trastornos del sueño y del ritmo circadiano, la sintomatología autonómica y las alteraciones neuroendocrinas son características frecuentes de la enfermedad de Huntington, y algunos de ellos se presentan en estadios tempranos de ella. Es plausible pensar que algunos de estos rasgos podrían ser el resultado de una disfunción hipotalámica del centro regulador del sueño, el metabolismo y el sistema nervioso autónomo. Objetivo. Se exponen las evidencias disponibles hasta el momento actual que sugieren una afectación hipotalámica en la enfermedad de Huntington. Desarrollo. Investigaciones histopatológicas, hormonales y de neuroimagen relacionan esta región cerebral con la enfermedad de Huntington. Se resumen los hallazgos, tanto experimentales como en modelos animales, o en estudios realizados con pacientes. Asimismo, se describen las repercusiones clínicas (alteraciones del sueño y del ritmo circadiano, la patología psiquiátrica y cognitiva, y la clínica vinculada con disfunción autonómica) secundarias a una posible afectación hipotalámica en esta enfermedad. Conclusiones. El hipotálamo se comporta como un centro integrador de las funciones neuroendocrinas y autonómicas, y presenta un papel no desdeñable sobre la sintomatología cognitiva y conductual. Alteraciones al respecto se han destacado en la enfermedad de Huntington. Son necesarios posteriores estudios para aclarar el papel y el alcance de esta región cerebral en esta enfermedad (AU)

Introduction. Disorders affecting sleep and the circadian rhythm, autonomic clinical signs and symptoms, and neuroendocrine alterations are frequent characteristics in Huntington's disease, some of which present in early stages of the disease. It is reasonable to think that some of these features could result from a hypothalamic dysfunction affecting the centre regulating sleep, metabolism and the autonomic nervous system. Aim. The study presents the evidence available to date that suggests the involvement of a hypothal mic disorder in Huntington's disease. Development. Histopathological, hormonal and neuroimaging research relates this area of the brain to Huntington's disease. The experimental findings and those obtained with animal models or in studies conducted with patients are summarised. Likewise, the clinical repercussions (sleep and circadian rhythm disorders, psychiatric and cognitive pathologies, and the clinical signs and symptoms linked to autonomic dysfunction) secondary to possible involvement of the hypothalamus in this disease are also described. Conclusions. The hypothalamus acts as a centre that integrates the neuroendocrine and autonomic functions, and plays a significant role in cognitive and behavioural signs and symptoms. Disorders of this type have been highlighted in Huntington's disease. Further studies are needed to elucidate the role and scope of this region of the brain in this disease (AU)

Circadian rhythm and autonomic dysfunction in presymptomatic and early Huntington's disease.

INTRODUCTION: Sleep and circadian rhythm disturbances are common in patients with neurodegenerative diseases such as Huntington's disease (HD). The aim of this study was to evaluate variability in circadian blood pressure (BP) to determine the association between abnormal circadian BP and sleep quality in patients with HD. METHODS: Cross-sectional, multicenter study of 38 HD mutation carriers (23 premanifest and 15 early stage patients) who were compared to 38 age- and sex-matched controls. BP was evaluated by ambulatory blood pressure monitoring (ABPM). Based on the percentage decrease in nocturnal BP, subjects were classified as either dippers (≥10%) or non-dippers (<10%). Sleep quality and daytime sleepiness were measured, respectively, using the Pittsburgh Sleep Quality Index (PSQI) and the Epworth Daytime Sleepiness Scale (ESS) and the scores on these indices were correlated with the ABPM findings. RESULTS: Sixty-three percent HD mutation carriers were non-dippers (86.7% of the symptomatic and 47.8% of the premanifest patients) versus 23.7% of controls (p = 0.001). In the HD group, sleep quality was significantly more impaired (PSQI>5) (p = 0.016) with more excessive daytime sleepiness (ESS>9) (p = 0.001) than in the control group. Nocturnal non-dipping was associated with worse sleep quality in patients (p = 0.011) but not in controls. CONCLUSION: These results show that patients with HD present early disturbances in the circadian rhythm of BP and that this altered nocturnal BP is associated with poor sleep quality. These findings suggest the potential role of subtle hypothalamic dysfunction in this population.

Quejas mnésicas y migraña crónica / Mnemonic complaints and chronic migraine

Introducción. Los pacientes con migraña crónica refieren frecuentemente un menor rendimiento cognitivo, lo que interfiere en su calidad de vida. Objetivo. Analizar si existe alteración en la capacidad ménsica de los pacientes con migraña crónica. Sujetos y métodos. Estudio transversal en pacientes con migraña crónica valorados de forma consecutiva en nuestra unidad, pareados en edad (18-60 años) y sexo con un grupo control constituido por voluntarios cognitivamente sanos. Se administraron los siguientes instrumentos cognitivos: test minimental de Folstein (MMSE), test de alteración de memoria (T@M), evaluación cognitiva de Montreal (MoCA) y memoria de trabajo. Resultados. Se incluyó un total de 30 pacientes con migraña crónica (edad media: 49,33 ± 10,05 años) pareados con un grupo control de 30 voluntarios sanos (edad media: 44,83 ± 10,91 años). El tiempo medio de evolución de los pacientes con migraña crónica fue de 4,47 ± 2,74 años. Al realizar el análisis comparativo entre ambos grupos, se encontraron diferencias significativas con puntuaciones más bajas de forma global en el grupo de pacientes con migraña crónica en el test de MoCA (24,16 frente a 29), T@M (43,76 frente a 48,8) y memoria de trabajo (17,5 frente a 24,26). El rendimiento en el MMSE fue similar en ambos grupos. Conclusiones. Los pacientes con migraña crónica pueden tener un menor rendimiento cognitivo independientemente de elementos distractores, como el farmacológico o la comorbilidad psiquiátrica, dado que la migraña crónica puede entenderse como un elemento más dentro del espectro del dolor crónico (AU)

Introduction. Patients with chronic migraine often report lower cognitive performance, which affects their quality of life. Aims. To analyse whether the mnemonic capacity of patients with chronic migraine is altered or not. Subjects and methods. A cross-sectional study was conducted in patients with chronic migraine evaluated consecutively in our unit, and paired by age (18-60 years) and gender with a control group consisting of cognitively healthy volunteers. The following cognitive instruments were administered: Folstein Minimental State Examination (MMSE), Memory Alteration Test (M@T), Montreal Cognitive Assessment (MoCA) and working memory. Results. A total of 30 patients with chronic migraine were included (mean age: 49.33 ± 10.05 years) paired with a control group of 30 healthy volunteers (mean age: 44.83 ± 10.91 years). The mean elapsed time since onset of the patients with chronic migraine was 4.47 ± 2.74 years. On performing a comparative analysis between the two groups, significant differences were found with overall lower scores in the group of patients with chronic migraine in the MoCA (24.16 versus 29), M@T (43.76 versus 48.8) and working memory tests (17.5 versus 24.26). Performance in the MMSE was similar in both groups. Conclusions. Patients with chronic migraine can have lower cognitive performance regardless of distracting elements, such as pharmacological factors or psychiatric comorbidity, since chronic migraine can be understood as yet another element within the spectrum of chronic pain (AU)

Afectación múltiple de pares craneales por un patógeno poco común: virus herpes humano tipo 7 / Multiple involvement of cranial nerves by an uncommon pathogen: human herpesvirus type 7

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