Idiopathic hypersomnia is a central disorder of hypersomnolence.

Of 75 participants enrolled, 37 had LST and 38 did not (non-LST). Most were female (LST, 73.0%; non-LST, 89.5%) and were taking medication for idiopathic hypersomnia (LST, 97.3%; non-LST, 81.6%); mean age was 33.7 (LST) and 34.4 years (non-LST). In LST and non-LST participants, respectively, mean (SD) ESS scores were 15.4 (3.8) and 13.6 (3.0), IHSS scores were 38.2 (7.1) and 32.2 (7.0), and FOSQ-10 scores were 9.6 (2.3) and 11.9 (2.8); mean (SD) Neuro-QoL scores were 22.9 (6.1) and 26.8 (5.7) for social roles/activities and 22.5 (6.6) and 17.4 (5.0) for stigma. Severe cognitive complaints (BC-CCI score 15–18) were reported by 35.1% and 18.4% of LST and non-LST participants, respectively. Severe depression (PHQ-9 score ≥20) was reported by 13.5% and 5.3%. Mean (SD) WPAI:SHP scores in LST and non-LST participants were 57.1 (21.9) and 41.5 (21.4) for presenteeism, 60.1 (24.1) and 45.8 (23.8) for absenteeism+presenteeism, and 72.2 (17.3) and 56.1 (23.2) for activity impairment. Mean (SD) TSQM scores in LST and non-LST participants were 57.9 (21.4) and 66.7 (20.3) for global satisfaction and 49.1 (16.6) and 56.2 (19.7) for effectiveness.