Fatigue in Sjögren's Syndrome: 3 Therapeutic Strategies

Inclusion Criteria: * Patient affiliated or entitled to a social security scheme. * Age \> 18 years. * Patient informed and having signed the information form and consent to participate in the study. * Patient with Sjögren's syndrome according to ACR/EULAR 2016 or AECG 2002 criteria, usually followed up every year or more frequently * Fatigue present for ≥ 6 months, without obvious explanation and/or specific treatment to conduct (e.g., disease's flare, chronic infection), with a current FACIT-F score \< 34 Exclusion Criteria: * Pre-existing atrial fibrillation or severe cardiac conduction disorders, * Recent stroke or myocardial infarction (\<6 months), * Left ventricular ejection fraction \<40% or severe heart failure (New York Heart Association functional class III or IV) * Recurrent episodes of vasovagal syncope, or history of vagotomy * People with dermatological problems in the area where the stimulation electrodes are to be placed * Current episode of venous or arterial thrombosis * Pregnancy or breastfeeding * Patient under protective measures (legal protection, curatorship, guardianship) * Inability or refusal to understand and/or sign informed consent to participate in the study, or to perform follow-up examinations required under the study