This section is from the book "A Treatise On Therapeutics, And Pharmacology Or Materia Medica Vol1", by George B. Wood. Also available from Amazon: Part 1 and Part 2.
Many of these complaints have been treated by electricity, with variable success, as hysteria, epilepsy, chorea, etc., and Matteucci even ventured to recommend it in tetanus, on the ground that a continuance of the electric current exhausts after a time the excitability of the muscles; but experience has not yet pronounced in its favour. In spasmodic-asthma great relief is said to have been sometimes obtained by passing a current of galvanism from the nape of the neck to the pit of the stomach. Hiccough has been treated effectually, it is said, in the same way.