These disorders are caused by trauma and are a natural mechanism to deal with trauma: somatic therapies support the processing of the trauma, which is held in the body and can be discharged, such that one does not dissociate in the future.
When people experience trauma, the mind has a wonderful way of protecting us from the pain that sometimes comes at the service of disconnecting from ourselves.
I've worked with dissociative disorders for 32 years and heave helped many people recover fully. If you're losing time, feel like you have more than one identity, there is hope.
Do you have trouble remembering certain events, specifically traumatic ones, or seem to "lose" time? Do you find yourself "checking out?" If so, please reach out and learn how to be more present and engaged in your life.