Observational Prolonged Trial in Myotonic Dystrophy Type 1

The intervention is cognitive behaviour therapy (CBT). The CBT consists of six different modules. All patients will start with individual goal setting and psycho-education about the role of cognitive-behavioural variables in the disabilities patients' experience. The patient formulates his or her treatment goals in concrete terms and later on in the therapy the goals are realised step by step by the patient. The treatment is tailored to the patient's problems: which of the six modules a patient will receive is dependent on the scores on measures that have been collected at baseline assessment. Based on our previous experience with modular interventions we expect that most patients will receive less than four modules.