The Neuroanatomical and Psychological Correlates of Suggestibility in Patients With Non-Responsive Chronic Migraine (SIGMA)
Chronic migraine is a disabling neurovascular disorder and one of the leading causes of years lived with disability worldwide. Population-based studies report a worrying level of resistance to currently available treatments in clinical practice. For this reason, the clinical and scientific community is increasingly investigating new therapeutic approaches aimed at reducing the burden of symptoms and improving patients' quality of life.
Among the alternative therapeutic approaches explored in migraine research, the placebo effect has emerged as a potentially important mechanism. However, the duration and intensity of its beneficial effects on migraine symptoms are still poorly understood. In particular, there is a need to identify biological and clinical markers that may predict which patients are more likely to benefit from placebo-related mechanisms.
One of the most promising factors is suggestibility, namely the tendency of an individual to respond to suggestions, expectations, or contextual influences. It is possible that patients with non-responsive chronic migraine may show different levels of suggestibility, which could influence the effectiveness of placebo-related responses.
To investigate this hypothesis, it is first necessary to better understand the psychobiological characteristics of patients with non-responsive chronic migraine (NRCM). Therefore, the primary aim of this monocentric observational study is to characterize the neurobiological and psychological profile of individuals affected by NRCM through advanced magnetic resonance imaging techniques (connectomics) and a comprehensive battery of psychodiagnostic assessments, including the evaluation of suggestibility.
The study plans to recruit at least 100 patients with NRCM and 100 healthy control subjects matched for age and sex. By comparing participants with high and low levels of suggestibility, the study aims to identify new neurobiological profiles (bio-phenotypes) associated with these characteristics. These findings may contribute to future research on the placebo effect and help develop more personalized treatment strategies for patients with chronic migraine who do not respond to conventional therapies.
Aperçu de l'étude
Statut
Les conditions
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: Domenico Bosco, Medical Doctor
- Numéro de téléphone: 0961/883021
- E-mail: nico_bosco@libero.it
Lieux d'étude
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Catanzaro
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Catanzaro, Catanzaro, Italie, 88100
- Recrutement
- Renato Dulbecco University Hospital
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Contact:
- Domenico Bosco, Medical Doctor
- Numéro de téléphone: 0961/883021
- E-mail: nico_bosco@libero.it
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-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria for Non-Responsive Chronic Migraine subjects:
- adults aged ≥ 18 years and ≤ 75 years;
- diagnosis of non-responsive chronic migraine (NRCM) according to ICHD-3 beta criteria;
- presence of at least 8 migraine days per month associated with disability (MIDAS ≥ 11), and insufficient response after 6 weeks or inability to tolerate at least three previously prescribed migraine preventive agents, i.e., resistance to standard therapy for at least 6 weeks;
- signed informed consent.
Inclusion Criteria for healthy subjects are:
- adults aged ≥ 18 years and not older than 75 years;
- absence of a diagnosis of NRCM according to ICHD3beta or other relevant -neurological disorders as assessed during the medical history taken at the headache center;
- signed informed consent.
Exclusion Criteria:
- older than 75 years;
- children
- pregnant or breastfeeding women;
- history of alcohol or substance abuse;
- affected by concomitant neurological, cardiovascular, or cerebrovascular diseases;
- liver disease or kidney disease;
- psychiatric disorders (psychosis, major depression, bipolar disorder).
- diagnosis or history of migraine (for healthy subjects).
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
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Contrôles sains
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**Patients with Non-Responsive Chronic Migraine (NRCM)**
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Suggestibility levels in chronic migraine
Délai: Baseline (single assessment at enrollment)
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Participants will be categorized into high- and low-suggestibility groups using K-means clustering based on Multidimensional Iowa Suggestibility Scale (MISS) scores.
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Baseline (single assessment at enrollment)
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Collaborateurs et enquêteurs
Collaborateurs
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Autres numéros d'identification d'étude
- 27/2026
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Informations sur les médicaments et les dispositifs, documents d'étude
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