Prevalence of Posttraumatic Stress Symptoms and Associated Characteristics Among Patients With Chronic Pain Conditions in a Norwegian University Hospital Outpatient Pain Clinic.

On the contrary, the association between screening positive for PTSD and the groups of pain diagnoses (primary pain and secondary pain) did not reach statistical significance, neither did the association between screening positive for PTSD and the categories of secondary pain (chronic cancer-related pain, chronic postsurgical or posttraumatic pain, chronic secondary musculoskeletal pain, chronic secondary visceral pain, chronic neuropathic pain, and chronic secondary headache or orofacial pain).

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