Sexual frustration -aka "Female Hysteria" can lead to irritability, muscle spasms, and insomnia among other symptoms. What to do with a Victorian woman in such a state? Send her to a doctor for professional pelvic massage. Victorian men paid doctors to to "treat" their wives with "hysterical paroxysm" -aka orgasm. A Dr. finding this to be tedious (?!) invented a machine=first vibrator.