Multiple sclerosis (MS) is an inflammatory and demyelinating disease of the central nervous system that causes disability in young adults. This disability can take many forms depending on the neurological systems affected: disability walking, cognitive impairment or disability in the upper limbs. The development of validated measurement tools for these different disabilities is essential for the follow-up of patients in clinical routine and for the evaluation of new therapies.

A specific self-questionnaire for patients with MS has recently been developed and validated in English and Dutch: "The Arm Function in Multiple Sclerosis Questionnaire (AMSQ)". The questionnaire groups 31 items and was created from questionnaires developed for other pathologies. The Dutch team that developed this questionnaire combines biostatisticians and neurologists, experts in the development and validation of disability measurement tools.

This study aims to validate the French version of AMSQ questionnaire. This study is carried out in collaboration with the Amsterdam team, which has carried out the methodology and will conduct the statistical analysis.

Inclusion Criteria:

• Patient with MS according to the diagnostic criteria of 2010
• Age ≥18 years
• Patients seen in consultation at the SEP reference center in Rennes

Exclusion Criteria:

• Other neurological or rheumatological pathology hindering the use of the upper limbs
• Inability to understand
• Minors
• Major persons subject to legal protection (legal safeguards, guardianship)
• Persons deprived of their liberty

Patients with MS according to the diagnostic criteria of 2010