Seven Year Itch

What exactly is the origin of the expression “Seven Year Itch”? I heard it was related to scabies. Is that true?

I have only heard it in relation to the movie. The idea there is that after seven years of marriage, the husband’s eye starts to wander. I don’t know if the expression already existed, or it was just made up for the movie.

Vulcans have been known to suffer from a form of it :wink:

And people that have been in a stale marrige for seven years and suddenly find Marilyn Monroe as the upstairs neighbor…with convenient through-the-ceiling access.

According to

http://www.wordwizard.com/ch_forum/topic.asp?TOPIC_ID=4357&SearchTerms=seven,year,itch
quote: “…Invented by American playwright George Axelrod in his play ‘The Seven year Itch (1952) and further popularized by the film starring Marilyn Monroe (1955).”

I thought it was older than that.

-rainy

This link says the phrase definitely is older.