sleep-wake disorder mental disorder brain disorder insomnia EFO:0004698 DSPS delayed sleep phase syndrome, susceptibility to insomnia (disease) MONDO:0013600 MESH:D007319 SCTID:193462001 A sleep disorder characterized by difficulty in falling asleep and/or remaining asleep. insomnia HP:0100785 ICD9:780.52 MEDGEN:214589 ICD10CM:G47.0 NCIT:C28286 ICD10WHO:G47.0 DSPD UMLS:C0917801 insomnia (disease) sleep disorder