associated features supporting diagnosis of, 
535
comorbidity with, 538
culture-related diagnostic issues in, 536
development and course of, 536
diagnostic criteria for, 533–534
diagnostic features of, 535
diagnostic markers for, 536–537
differential diagnosis of, 537
functional consequences of, 537
gender-related diagnostic issues in, 536
prevalence of, 535–536
risk and prognostic factors for, 536
specifiers for, 535
Insomnia disorder, 361, 362–368
associated features supporting diagnosis of, 
364
brief, 420
comorbid ity w ith, 368
development and course of, 365
diagnostic criteria for, 362–363
diagnostic features of, 363–364
diagnostic markers for, 366–367
differential diagnosis of, 367–368