Yes, it is common for people with Dissociative Identity Disorder (DID) to experience periods of amnesia or lack of awareness regarding actions, events, or behaviors that occur when a different alter (also known as a part or personality) is in control. These episodes of amnesia are often referred to as "dissociative amnesia."
When a specific alter is in control, the person with DID may not have conscious awareness of what that alter does or experiences during that time. Each alter can have its own unique set of memories, beliefs, emotions, and behaviors. As a result, there may be gaps in memory when one alter switches with another, and this can lead to actions or behaviors that the individual is not aware of or doesn't remember.
The amnesic barriers between alters are a core feature of DID and serve as a protective mechanism for the person. These barriers prevent distressing or traumatic memories from flooding into the person's consciousness all at once. Instead, memories and emotions associated with specific alters are kept separate until the individual is ready to process them in therapy or in a safe and controlled environment.
It's essential to note that DID is a complex and often misunderstood disorder, and individuals with DID can have a wide range of experiences and symptoms. Each person's presentation of DID is unique, and not everyone with DID will experience amnesia to the same extent or in the same way.
Therapy is a crucial component of treatment for DID, aiming to increase awareness, foster cooperation among alters, and integrate dissociated parts of the person's identity to promote healing and overall well-being. If you or someone you know is experiencing symptoms of DID, seeking professional help from a mental health provider with expertise in dissociative disorders is essential for accurate diagnosis and appropriate support.