A lot of informational websites have references to Support Groups at the bottom of their pages, along with the other references.
A simple google search may help you find places to connect you to other people who share your condition.
I tried Rareconnect.org but most people haven't been on in four years, for some reason, so it didn't work for me.
Facebook Support Groups are good, they are the most helpful that I have found.
Meantime, we at 7cups are here to support you. We may not know everything you're going through, but we'll gladly listen! :)
You are not alone.
When it comes to rare conditions, there are usually charities involved in creating awareness and offering advice to people with the condition. Those websites sometimes have forums or events which can connect you with other people who have the same condition. You can also look on social media, such a Facebook, for groups related to your condition. I am a part of Facebook groups for my health conditions and it is comforting to know I have a private space to rant with others who understand me. We also have a forum community dedicated to disability support, you might find someone else there with the same condition? https://www.7cups.com/home/disabilities/
this is a great question and i'm so glad that this has been asked! i have experience with this very thing. one thing that you can do is search for the name of your condition in facebook and then click on the "groups" tab. you can join those particular groups and be able to connect, learn and not feel alone. i know what it is like to have a rare condition and feel completely alone, and i hope that my suggestion will be helpful for you so that you can get some support. i wish you the best!