Which statement reflects the DSM-5-TR Insomnia Disorder criterion regarding frequency and duration?

• A. Symptoms occur at least three nights per week for three months.
• B. Symptoms occur daily for one week.
• C. Symptoms occur monthly for six months.
• D. Symptoms occur only during daytime naps.

Answer: (A)

The key idea being tested is how the DSM-5-TR defines how often and for how long insomnia symptoms must occur.

In Insomnia Disorder, the sleep difficulties must happen at least three nights per week and persist for at least three months, and they cause distress or impairment despite adequate opportunity to sleep. The option that states three or more nights per week for three months directly hits both the frequency and the duration criteria, making it the best choice.

The other statements miss the requirement: daily for one week uses too little time, monthly for six months uses the wrong frequency, and only occurring during daytime naps is not describing insomnia, which centers on nighttime sleep problems.