Even after a full night of sleep, people with DID may still feel exhausted.
In some cases, sleep quality is disrupted by nightmares or distressing dreams. In others, parts of the system may remain alert because they are afraid of what could happen during sleep. This ongoing vigilance can interfere with restful sleep.
Sometimes people may also get less sleep than they realize. A person may go to bed for the night but be unaware that another part wakes up or becomes active during the night.
Additionally, the brain and nervous system continue expending energy on many background processes. These can include coordinating parts of the system and ensuring that difficult memories or emotions remain safely contained by dissociative barriers.
Because of this, exhaustion may come from both reduced sleep quality and the ongoing mental effort required to manage dissociation, even during sleep.
This page is part of the Why Is DID So Exhausting? section of the CommuniDID site, which explains the hidden cognitive and emotional effort involved in dissociation, including internal coordination, memory management, and vigilance.
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