Epidemiology
The prevalence of mitempfindung is difficult to determine exactly, because many individuals would not be aware of having referred itch until the phenomenon is explained to them. Consequently, variability exists within the scientific literature as to the actual prevalence of referred itch in humans. Mittelmann (1920) has reported that 8 out of 9 people questioned experienced referred sensations. In 1973, Sterling reported that about half of 20 healthy individuals questioned had mitempfindung.
The variability and heterogeneous characteristic of mitempfindung among individuals makes it difficult to determine a precise set of identifying symptoms of the disease, or a set of risk factors. Nevertheless, mitempfindung is thought to be extremely common.
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