Would admitting to a therapist that you've lied to hospitals/doctors have repercussions?
I guess it would depend on what you lied about?
I'd say being as honest as possible with your therapist is always the best option, to get the best results.
Really the only things you could tell them, that would result in what I'd consider repercussions, is if you're actively planning on harming/murdering yourself or others. Everything else is totally confidential, and it would be seen as a pretty big breech of ethics, for them to act otherwise.
Unless you're referring to a psychiatrist, and you're worried about your past dishonesty, effecting your chances of getting certain meds?
I can't really speak on that.
But if it's a psychologist, just be honest. Without getting too specific, I've admitted to some pretty illegal stuff in similar situations. Your therapist has heard
way worse, I'm sure, and should be non-judgemental, if they're even halfway professional.