just a bit of information....if the reason behind the dissociation is something like anxiety, depression, or the dissociation is part of the diagnosis of depression (here in america depression now includes the symptom of dissociation) then antidepressants can work.

how antidepressants work is they slow down the brains activities/chemical production and rate of absorbing those chemicals. think of it like standing on a river bank. the two sides of the river are the neurons/receptors and in the middle is fluid. one side releases neurotransmitters and the other side gathers them up. with antidepressants the sides release and gather at a slower rate. this allows a person to have more time to think and react appropriately to things going on in their life, rather than getting overwhelmed and reacting in the wrong ways to whats going on in their life.

example

if depression is the trigger for dissociating, because the medication is keeping that person on track with the rate of release and uptake of their brains chemicals they no longer feel depressed which means they no longer have their dissociation symptoms.

if anxiety is the reason for the dissociation symptoms. the medications keep the person from feeling anxious so they dont have their dissociation symptoms any more.