Group Psychotherapy in Narcolepsy Type 1

Inclusion Criteria: * Diagnosed narcolepsy type 1 according to AASM, examined by an experienced sleep physician including history, clinical examination, polysomnographic examination (PSG) with a multiple sleep latency test (MSLT), possibly also including determination of HLA DQB1 \* 062 and orexin A / hypocretin 1 * Age between 18 and 65 years * Signed informed consent * Exclusion of other clinically relevant organic sleep disorders by means of polysomnography (AHI\>10/h) Exclusion Criteria: * Presence of severe psychiatric comorbidity * Other psychotherapy during the study period * Change of medication used for narcolepsy therapy shortly before the start and during the study period including follow-up measurement. In this case, patients may still complete group therapy, but the data will not be included in the analysis.