You could have a mental health condition you don't know about, called misokinesia. This is distress caused by watching people who fidget. People fidget because of nervousness or stress. Misokinesia sufferers can have an "intense hatred" of people who tap their fingers, click a pen, or twiddle their hair. Misokinesia is like a condition called misophonia. This is a great dislike of other people's noises, such as heavy breathing, throat clearing or loud eating.

Researchers in Canada interviewed 21 misokinesia sufferers from a support group. The researchers concluded that the condition can be "life limiting". Sufferers can have extreme feelings of rage and disgust. One sufferer said: "If I see someone tapping their fingers…my immediate thought is to chop their fingers off." A psychologist said, "violent images might pop into the head" of sufferers. She said people can be triggered by tiny things.