The Vulcan PADD used to incriminate T'Pol is actually a Bajoran PADD from Star Trek: Deep Space Nine, just repainted blue and silver.
Goof: When T'Pol meets with Dr Yuris, she tells him that the mind meld was involuntary, and he urges her to explain that to the other doctors. However, seeing as how their meeting was a secret, it was never an option for him to tell the others. However, during the hearing, Dr Yuris comes forward with the information and claims that T'Pol had made him promise not to share it. Archer also makes a comment to her about Yuris breaking his promise. She got Archer not to reveal it, but she had never discussed with Dr Yuris the possibility of him saying something.
Phlox: Don't you find her attractive?
Trip: Uh, sure. I mean no, she's your wife!
Phlox: What does that have to do with it?
Trip: Well.. I gotta get back to my warp engine. The plasma's running a little hot.
Feezal: I know how it feels.
Trip: I was brought up believing you don't play around with another man's wife. I don't think I'm ever going to change my mind about that.
Phlox: As you wish. Your loss.
Feezal: You're a very confident young man, aren't you?
Trip: I try to be.
The following dedication appeared on screen before the episode began: "In memory of the Columbia crew... You will always be an inspiration." The Space Shuttle Columbia disintegrated as it reentered Earth's atmosphere on February 1, 2003, four days prior to the airing of this episode.
"Stigma" is Enterprise's contribution to an AIDS awareness campaign put together by Viacom and the Kaiser Foundation.