Persistent somatic symptom related stigmatisation by healthcare professionals: A systematic review of questionnaire measurement instruments.

No instrument provided acceptable evidence on all measurement properties. Many instruments were developed for use within a single publication, with little evidence of their development or establishment of content validity. This is problematic because stigma instruments should reflect the challenges that healthcare professionals face when working with patients with PSS. They should also reflect the experiences that patients with PSS have widely reported during clinical encounters.