Most criminal convictions won’t come into evidence in your personal injury case. Things like DUI and assault are likely irrelevant and excluded by the rules of evidence.
You’ll probably be asked about your criminal convictions in discovery (either written or at your deposition). The worst thing you can do is lie. While your DUI from 1999 won’t come into evidence if you tell the truth about it, you can bet the defense will push hard to have it admitted if you lie about it at your deposition.
Criminal convictions can be embarrassing. Some more than others. Recently one of our clients failed to disclose during a deposition that he had been convicted of “exposure”. If he’d come clean it wouldn’t have been an issue. Now, if his case goes to trial, the focus will be on the admissibility of that exposure conviction rather than the injuries he suffered as a result of someone else’s negligence.