Hi guys!
I'm new here, and I just wanted to ask a few questions about diagnosis of vasculitis. After being ill since May, I was finally diagnosed with autoimmune hepatitis around September 1st and started on 9mg of oral budesonide per day. Just over a week ago the few little red dots I noticed on my feet started to spread, and last Monday I came up in a bright red rash all over my lower legs and the tops of my feet, which started to spread up my thighs and onto my arms a little bit. I got an appointment with an out of hours GP as they were worried about some sort of severe infection due to the budesonide (which I had been taking for about 9 days at that point). GP admits me, and on the Tuesday I had an ECG, chest X-Ray, ultrasound to check up on my liver, loads of bloods and a skin biopsy. I was told that it was a vasculitic rash, and they were testing my blood for ANCA, plus a load of other autoimmune markers. I had had no infections recently and no evidence of anything was seen in my throat, ears etc. That Monday night there was protein in my urine, but none was found when this was repeated twice on the Tuesday. I was given Dermovate, and discharged on Thursday as the rash was clearing up well (and is now nearly gone).
I've had allergic rhinitis (stuffy/runny nose and a cough caused by post nasal drip) for a couple of years now, with no clear trigger and only minimal response to antihistamines. I also feel very tired a lot, but this could easily be due to the hepatitis as the fatigue is a long standing problem. Furthermore, I've had a lot of bad stomach pain recently, often but not always after meals. There's no clear correlation with food, and this morning I was in a lot of pain almost as soon as I woke up, but tonight after tea there was no pain. I've had right upper quadrant pain/discomfort and nausea for quite some time because of the liver problems, but I think this pain is a relatively new thing. Yesterday morning I realised that my left calf, which was where the rash started and was more affected, has felt like I've overworked the muscles a bit through exercising even though I know I haven't. It's a bit better today but driving in traffic yesterday was becoming very uncomfortable, and if I press the muscle it's sore.
In my infinite wisdom, I decided to get out my textbooks (I'm a medical student) and try and learn a bit before I get the results of my skin biopsy and bloods on Thursday morning. I read about all kinds of scary looking autoimmune vasculitis conditions, but I don't really understand a huge amount about diagnosis. I know that the ANCA result will guide them a bit, but will a skin biopsy be able to confirm a particular disease (i.e. Wegner's, Churg-Strauss etc.), or will it simply tell them that it was some kind of vasculitis? By the way, I'm 24 and prior to the AIH diagnosis I was fit and well. I could see the AIH diagnosis coming as soon as my GP said hepatitis back in early July, so although I worry about the effect it might have on my life a bit I at least had some time to process things. I think I'm just a bit scared of being told that there's something else wrong with me, and that it's going to have a big impact on my life.
If anyone has any advice, either about the process of diagnosis or just in general it would be greatly appreciated!
Thanks for reading!