2016 Postmortem

Disorders of Estreme Stress Not Otherwise Specified. A lot of therapists have argued that the category of symptoms associated with extreme stress is broader than what the DSM labels PTSD. For example, dissociation, depression, certain types of chronic anxiety, some Cluster B Personality Disorder symptoms, etc. may be present in survivors of trauma who don't show the full gamut of classically recognized PTSD symptoms.

And, FWIW, I have come to believe that there may be some genetic susceptibility to environmental impacts such that different people exposed to the same type of trauma may develop different symptom patterns, of differing severity, partly because of the genotypes they bring to the experience. Nevertheless, there is a tendency in "biological psychiatry" to attribute everything to genes and to seek to treat everything with medications.