The work group is proposing that this disorder be subsumed into an existing disorder: Primary Hypersomnia.

The work group is proposing to remove or integrate "related to" (another mental disorder or to another medical disorder) to avoid causal attributions (e.g., A is due to B) and to encourage, instead, specification of clinically relevant comorbidities worthy of independent clinical attention. This change is consistent with the 2005 NIH State of the Science conference on Insomnia. 

The work group is proposing that this disorder be subsumed into an existing disorder: Primary Hypersomnia.

Hypersomnia Related to Another Mental Disorder [Indicate the Axis I or Axis II disorder]

A. The predominant complaint is excessive sleepiness for at least 1 month as evidenced by either prolonged sleep episodes or daytime sleep episodes that occur almost daily.

B. The excessive sleepiness causes clinically significant distress or impairment in social, occupational, or other important areas of functioning.

C. The hypersomnia is judged to be related to another Axis I or Axis II disorder (e.g., Major Depressive Disorder, Dysthymic Disorder) but is sufficiently severe to warrant independent clinical attention.

D. The disturbance is not better accounted for by another Sleep Disorder (e.g., Narcolepsy, Breathing-Related Sleep Disorder, a Parasomnia) or by an inadequate amount of sleep.

E. The disturbance is not due to the direct physiological effects of a substance (e.g., a drug of abuse, a medication) or a general medical condition.