The majority of cases are thought to be infectious in origin. The
majority are probably related to viral infection. Exposure to a breeze is
NOT a factor. Electric stimulatation is NOT standard therapy, and wasn't
in 1984, and has NOT been shown to be of any use. Lyme is a possible
cause, but very unlikely if you didn't have a rash or tic bite, or other
symptoms. Also, quite unlikely to get in northern CA.