Hello, and thanks for your medical question on E Health Forum.
From the history provided it seems that you might be having a persistent infection, in the blood.
If the bruise was not related to any form of trauma, then it might be a result of platelet dysfunction.
You might benefit by consulting your doctor, for a physical examination, after which he can order blood tests and culture sensitivity to detect the cause of infection or any platelet disorder. In addition a urinalysis and ultrasound of the kidney might be helpful to rule out any abnormality with the kidneys.
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