meaning can it move threw the blood from what I under stand some doctors believe it can about Sevin years ago I had it all over and sadly the doctor I was seeing did not want to give me steroids and I had it four three months she gave me steroid cream but no pills this became insane after going to see her and telling her that I was going to go to another doctor she then gave me pills in total it took four months of tortur for it to go away I sometimes wander if it could be in my blood.
that can last as long as 5 weeks. Since you have had the symptoms since two years, hence it cannot be due to poison ivy but due to some other lesion.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.