The so-called nocebo effect is the dark counterpart of the placebo effect. Nocebo means something like "I will harm." The patient expects that certain drugs or therapies will not help him or even harm him. The negative effects of therapy, like the positives in the placebo effect, actually occur, but cannot be attributed to the active drug or other treatment specifications. Here, too, the force of (negative) expectations and thoughts is decisive. Similar effects can occur in the psychological context. People who are very anxious and always expect the worst may find it so in reality. Wherever negative expectations and beliefs are involved, hypnosis can come in. Hypnosis works with the subconscious mind of the person, where the fears are deeply anchored and provides there in the best case for a resolution.