The name that The Doctor takes in his holographic family program, Kenneth, is in reference to series co-producer Kenneth Biller.
This episode marks the only appearance of Torres' asymmetrical-braided hairstyle.
Robert Picardo was especially happy to work with Wendy Schaal on this episode, with whom he appeared in Innerspace (1987) and The 'Burbs (1989), and became good friends.
The Doctor gives Tom Paris a shot of hyronolin and something else. Hyronolin is mentioned in The Deadly Years (1967). Dr. McCoy says that adrenaline used to be used but now they use hyronolin.