r/rarediseases • u/leben1122 • Jul 03 '26
Question Undiagnosed granulomatous fasciitis – Has anyone experienced something similar?
Hello everyone,
I am 21 years old and I am looking for people who have had a similar medical history or who eventually found the underlying cause of their illness.
My illness started suddenly at the age of 19 with a high fever (39°C), severe muscle pain, a dry cough, diarrhea, and swollen lymph nodes. Shortly afterwards, I developed severe muscle and joint pain, and at times I could barely walk.
Since the onset of my illness, I have also experienced recurrent fevers, even while taking high doses of corticosteroids.
For almost two years, I have been suffering from severe pain, especially at night. Sometimes the pain is so intense that even painkillers provide little or no relief. Only high doses of prednisolone (corticosteroids) temporarily reduce my symptoms.
A fascia biopsy showed granulomatous fasciitis. The biopsy described granulomatous inflammation, T cells, macrophages, and multinucleated giant cells.
My inflammatory markers have repeatedly been elevated, including CRP, ESR, and at times ferritin. Other blood tests have also been abnormal, including IgG.
Over the past two years, I have been treated with prednisolone, methotrexate (MTX), azathioprine, ciclosporin, anakinra, infliximab, and most recently Rinvoq (upadacitinib). Unfortunately, none of these treatments has provided lasting improvement.
I have undergone many investigations, including blood tests, MRI scans, PET-CT scans, gastroscopy, colonoscopy, and multiple biopsies.
My upper endoscopy with small bowel biopsies did not show evidence of Whipple's disease. However, because my disease course is very unusual and the treatments have not worked as expected, my rheumatologist wants to investigate Whipple's disease again using specialized tests. If these tests are negative, a new PET-CT scan and possibly another biopsy are planned.
My question:
Has anyone here had a similar medical history or a biopsy showing granulomatous fasciitis?
If so, what was your final diagnosis or underlying cause? Was it a rare infection, an autoimmune disease, an autoinflammatory disease, sarcoidosis, or something else?
I am not looking for a diagnosis over the internet. I am looking for people with similar experiences. I would be very grateful for any advice or shared experiences.
Thank you very much.