btw, I'm 14 year old female with no clue why I keep experiencing so many health problems!
Because your so young your body is constantly changing so hyperhydrosis will stop when you get older,everyone i know had it bad at school as all your hormones are changing.first of all try not to worry bout your nose to much,u can allways breath via your mouth so dont panic! :) .if i was you id go to the doctors,tell them about it and ask to be refered to a ENT specalist,they can check your nose/sinuses etc out,so then ul get a better answer etc allso i believe you can be checked for overactive thyroid via blood tests,which is nice and easy as well,hope this helps a bit :)