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-flameohotman- t1_ixtftim wrote

Reply to comment by Possumsurprise in Dissociative symptoms are common among individuals with depression, study finds by chrisdh79

It's because the diagnostic guidelines of the DSM and ICD specifically require that for someone to be diagnosed with DPDR, the depersonalization and/or derealization must not caused by another psychiatric disorder, drugs, etc. If the experience of dissociation is comorbid with something else, then it's just a symptom of that other thing (e.g., depression or anxiety). It's probably pretty rare for someone to have a dissociative disorder with no underlying cause.

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