Active Prevention of Upper Limb Musculoskeletal Disorders in Thermal Environment (MUSKA).

Inclusion Criteria: * TMS latent or symptomatic of the upper limbs according to the European Consensus SALTSA / Q score with INRS Nordic \> 2 * With or without a history of work stoppage and occupation at the time of inclusion * Age: \> 18 years \< 65 years * Patient affiliated to a social security scheme ( beneficiary entitled ) * Patient has given its consent in writing to participate in the study Exclusion Criteria: * Contraindication to the spa therapy * Spa achieved in the last 12 months * Trouble behavior or understanding making it impossible to assess