Therefore, a nocebo effect
is where a person's symptoms are worsened by the fake medicine in a drug trial.
The increase in symptoms that followed each of the specific food challenges could have been due to a nocebo effect
For example, in a trial of anti-migraine medication, if the active ingredient is an anticonvulsant, the nocebo effect
(the placebo's side effect) will disproportionally relate to anorexia or memory; but if the active ingredient is a non-steroidal anti-inflammatory drug, the nocebo effect
will more likely be gastrointestinal symptoms and thirst.
They also discuss the dark side of the placebo effect: the nocebo effect
A recent review of 100 MS clinical trials over the past 20 years found a prominent nocebo effect
Studying the nocebo effect
is difficult ethically because doctors would need to tell the patient, "'Now I'm going to give you a substance that will increase your pain' but actually give a placebo," says neuroscientist Fabrizio Benedetti.
The nocebo effect
is one that turns on the expectations of no benefit or even negative changes.
When words are painful: unraveling the mechanisms of the nocebo effect
Although traditionally viewed as a positive phenomenon--the common sense model of the placebo effect is one in which an individual benefits from false information such as "the tablet I am about to give you will enhance your power output in the upcoming competition"--growing experimental support for the idea of the nocebo effect
suggests that placebo/nocebo responsiveness might represent a disadvantage to an individual.
In our opinion, this may have lead to a nocebo effect
for this particular intervention.
Possibly these effects--which were purely subjectively reported by the women--were due to a nocebo effect
in these non-blinded studies.
We've probably all suffered the nocebo effect
, developing symptoms in response to somebody else's symptoms or upon receiving a diagnosis of illness.