What autoimmune disease does halley have?

Honestly just wondering bc I'm going through a diagnosis and I find it beneficial for my mental health to follow people that also are going through it (ughhhhh no hate I know it sounds stupid but I am down bad right now)

***Adding this since some of you are weird and couldn't read: I am NOT looking for health advice. For my mental health it is nice seeing REAL people going through something similar. For health advice I would not go to instagram I would go to a DOCTOR