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Depression Glossary

Hypersomnia in depression

Hypersomnia is excessive sleep — sleeping more hours than needed, feeling very sleepy during the day even after a full night's sleep, or having great difficulty getting out of bed (not mere reluctance, but genuine, persistent drowsiness).

In depression, sleep can go to either extreme: insomnia (more common in classic MDD) or hypersomnia (more common in atypical depression, seasonal depression, bipolar depression, and some cases of dysthymia). Depressive hypersomnia is different from "laziness" — it is a symptom of the illness, mediated by neurobiological changes.

People who oversleep during depression frequently: wake up not feeling rested, use sleep as an escape from their low mood, struggle to keep a routine because they feel "held hostage" by the bed, and notice their mood worsening after sleeping too much (which is common).

In treatment, regulating the sleep-wake cycle (waking at a fixed time regardless of when you fell asleep) is an important behavioral intervention. Some antidepressants are more activating and may help more with hypersomnia (bupropion, morning-dosed fluoxetine) than more sedating ones.

Practical example

Julia sleeps 12 hours a day during a depressive episode but wakes up feeling "leaden" — exhausted, with no energy for even the smallest task. Her family thinks she's "exaggerating" or being lazy, but the hypersomnia is a symptom of the depression. Her therapist recommended waking at 7am regardless of bedtime as part of her behavioral treatment.

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