Idiopathic hypersomnia (IH) is clinically heterogeneous yet defined almost entirely in electrophysiological terms, and pharmacotherapy frequently fails to restore daytime functioning. We asked whether IH heterogeneity extends to stable behavioural phenotypes and whether an individualised, multidisciplinary, non-pharmacological programme is feasible and yields a clinically meaningful signal on symptom burden. In this prospective single-arm study, 20 adults with ICSD-3-TR-diagnosed IH at a…
