This film is the first part of a trilogy that also includes So Sweet... So Perverse (1969) and A Quiet Place to Kill (1970).
The black negligee Carol Baker wears in this film is the one she also wears in A Quiet Place to Kill (1970).
After its Italian premiere in February 1969, Orgasmo was released in the United States under the alternative title Paranoia later that same year. It was one of the first films to carry an X rating in the United States under the newly established Motion Picture Association film rating system, and this fact was sensationalized for its American promotional materials.