The risk of tapering off Lithium without doctor's consent or knowledge

is this a horrible idea? (i'm not asking if it's a good idea, i know it's not, but is it horrible? cause if it's horrible, that's the only way i'm not gonna do it)
i talked to my day program psychiatrist yesterday and this is the 3rd psychiatrist that doesn't wanna take me off lithium even though 1. it's not doing anything at all, even though i've been on it for months and i'm at the highest dose my body can handle 2. it gives me bad acne and makes me feel like crap and insecure and not wanna leave the house. and this all started right after i started believing that i actually WAS beautiful. and this is making me doubt that. and it's a shame. it took a long way for me to get that feeling, and now this has to happen.
i take 900mg, 450 in the morning and 450 at night.
in short, my plan: starting tonight, skip my nightly doses. just take 450 a day. my reasoning for skipping the nightly doses is that if there's any withdrawal effects, i won't feel them because i'll be asleep. and come morning, it'll be time to take another dose.
then after i see the results of that (any withdrawal effects during the day, if my acne gets better) i'll determine my next plan (eventually getting off it in general).
i'm in a day program, so it won't really matter that much if i'm a LITTLE bit "off". it's not like i'm in school and my grades will plummet and i'll be regretting this for the rest of my life.
i'm usually VERY obedient and i'm never a problem, but the lithium evidently hasn't been doing anything (it worked VERY well when i first started, which is probably why they're all trying to keep me on, but after that everything started going downhill and it's not working anymore at all, even after an increase a month ago). i've expressed this concern to my outpatient psychiatrist, the psychiatrist at my hospital, and now the psychiatrist at my day program (which i've been to before, and the day program was what originally put me on this medication, 4 months ago). and they're all refusing to take me off for whatever reason. but it's making me miserable and i know it's the medication causing the acne because when i first started the medication at 600mg, the acne only became mild/moderate, and once i got increased to 900mg, the acne's all over my face and now on my chest and one of my shoulders (i've NEVER had acne on my body before). i used to have a pretty clear face, only a blemish or two around the time i got my period. and even that could be gotten rid of easily by washing my face. i now wash my face everyday in the shower and it doesn't do anything. i don't touch my face, etc.
i'm in the process of finding a dermatologist and finding and trying an acne face wash that my psychiatrist recommended, but that's going to take a while and i'm so sick of feeling ugly whenever i leave the house. the worst part is i don't even have my makeup right now because my sister took it with her (without my prior knowledge...even though she has a clear face and i'm over here being disgusting) to her friend's house in NY and i can't drive because i'm only 16 and my mom's always busy so i can't go somewhere to get any. and i don't have any friends. well i do, but i don't like reaching out to talk to them, especially since i don't see them everyday anymore so it's a lot more effort. i'm introverted.
my sister isn't coming home for at least 3 more weeks. and i can't wait until then. i feel disgusting.
sorry, i went on a bit of a tangent, but back to the topic: is that a terrible idea? (what i listed above) like, will something terrible happen? i know it's not a good idea, but the only thing that would prevent me from doing it was if it was extremely risky.

The acne part I can understand, i'm 46 and I started lithium couple years ago and i broke out someth ing terrible , reminded me of my teen years. There is cheap over the counter medicated creams that will take care of the problem "Salicylic acid" Target brand 5.00 for a month supply.

Talk to your Doctor if you are going to stop taking it. There may be a different medication you can switch to.

Hi my Doctor stopped my lithium over night , i was expecting terrible withdraws but i had none thank God i was on 600mg , a month later i was put on Seroquel 300mg with has helped me alot , i would say lithium did nothing for me !!!!!!! Please take care X

Just give it up you don't need the acne.

I think the best choice would be to give it up and inform your psychiatrist at your program that you are doing so. He/she may give you an idea of how to taper off safely. I mean what would it hurt to inform him/her? Nothing. You're going to do it anyway, might as well utilize the resource you have to do it as painlessly as possible. Plus, they will be able to monitor you there and make sure you are safe. I'm not saying you have to ask their permission, I just think you'd be doing yourself a favor to tell them. That's all.

Bad idea.

My concern would be that if you do this secretly you will lose the trust of your MD and your parents. If you were older, it might be different, but they are going to label you an irresponsible kid who is working against getting better. They even might make someone watch you take and swallow your pills.

It makes sense to get off, but do it the right way. Could your parents convince your pdoc for you?

Best,
EJ

P.s. I have often found that I didn't realize how much a med was helping until I tried to stop it. That might not be the case here, but I thought I'd share.

EJ