Insomnia is the most prevalent sleep disorder in the general popula-tion, and is commonly encountered in medical practices. Insomnia isdefined as the subjective perception of difficulty with sleep initiation,duration, consolidation, or quality that occurs despite adequate oppor-tunity for sleep, and that results in some form of daytime impairment.1Insomnia may present with a variety of specific complaints and eti-ologies, making the evaluation and management of chronic insomniademanding on a clinician's time.
（1）toimprovesleepqualityandquantityand（2）toimproveinsomnia related daytime impairments. （Consensus）v Otherspecificoutcomeindicatorsforsleepgenerallyin-cludemeasuresofwaketimeaftersleeponset（WASO）
sleeponsetlatency（SOL）numberofawakenings,sleeptimeorsleepefficiency,formationofapositiveandclearassociation between the bed and sleeping, and improve-ment of sleep related psychological distress. （Consensus）v Sleepdiarydatashouldbecollectedpriortoandduringthe course of active treatment and in the case of relapse orreevaluationinthelongterm（every6months）。（Consen-sus）
In addition to clinical reassessment, repeated administra-tion of questionnaires and survey instruments may be use-ful in assessing outcome and guiding further treatment ef-forts. （Consensus）
Ideally, regardless of the therapy type, clinical reassess-ment should occur every few weeks and/or monthly untiltheinsomniaappearsstableorresolved,andthenevery6months, as the relapse rate for insomnia is high. （Consen-sus）
Whenasingletreatmentorcombinationoftreatmentshasbeen ineffective, other behavioral therapies, pharmacologi-cal therapies, combined therapies, or reevaluation for oc-cult comorbid disorders should be considered. （Consen-sus）