Infection with the Lyme bacteria can cause this sort of internal vibration - a type of paresthesia (peripheral nerve sensation). When it's mild, you may first notice it at night when your body is quiet and still.
The supporting cast features James Caan as the young gambler, Charlene Holt, Ed Asner, Paul Fix, Arthur Hunnicutt, Michele Carey, and Christopher George. El Dorado was filmed on location in Tucson, Arizona and Kanab, Utah, and was shot in Technicolor. The paintings in the credits are by Olaf Wieghorst, who plays Swede Larsen in the film. The musical score was composed by Nelson Riddle.
El Dorado (pronounced /ÉldÉµreÉªdoÊ/ ( listen) el-dÉ-ray-doh) is a city situated along the Walnut River in the central part of Butler County, located in south-central Kansas, in the Central United States. As of the 2010 census, the city population was 13,021. It is the county seat and most populous city of Butler County.