Yes, it's the nocebo effect. I personally think it figures prominently in psychosomatic pathologies actually.
People with [psycho]somatic symptom disorders, with medically unexplained symptoms, are more likely to report negative side effects in response to placebo, for example.
When I've read about it, the research is often focused on perceived negative symptoms rather than lack of therapeutic effect, but that's just my impression and I suspect both happen.
People with [psycho]somatic symptom disorders, with medically unexplained symptoms, are more likely to report negative side effects in response to placebo, for example.
When I've read about it, the research is often focused on perceived negative symptoms rather than lack of therapeutic effect, but that's just my impression and I suspect both happen.