The “7-year itch” is a term used also to describe the itch caused by a scabies infestation.
Early researchers felt that there was a cycle of 7-30 years for scabies epidemics. During periods of war the later observed that scabies epidemics may occur more frequently.
One group of researchers, over a period of two decades of observations found only one in thirty-one persons exposed to scabies acquires the infestation. These infestations are more common in winter months. Apparently the mites live longer in cooler temperatures. People make more close contacts in crowded places during the winter months. This is felt to be one of the reasons for more frequent winter time infestations.
Other studies revealed that the mite is sensitive…