hi welcome to HCM
-i had gone through your query and understand your concerns.
-the condition VASCULITIS
is due to immune system abnormality may produce inflammation of blood vessels is the underlying for your sufferings.
are other possible causes
i advise you taking Homeopathic
medicines gives safe and permanent cure for your complaints
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints
I hope this is helpful for you, thank you