PTSD is recognised in the diagnostic systems. Complex PTSD is recognised by the World Health Organisation (ICD-11). Complex trauma is neither of these things. Instead, we should consider a spectrum of distress from anxiety and depression to PTSD, C-PTSD, complex trauma, and dissociation. Each shares some of the other concerns. For this reason, we cannot appropriately respond to complex trauma without addressing dissociation. They go together. Always.