 [ Symptoms ] what happens if the pus from an abscess reaches the bloodstream  i had an abscess in my right axilla it was drained surgically because of how painful and big it was i suddenly developed an unexplained rash in my arm could this be from the drainage in the abscess [ Disease ] i do not know i can not examine you but based on the limited information that you shared you need to remain on those antibiotics that i assume your medical provider gave you a rash on the arm does not imply the infection is in your bloodstream septicemia septicemia causes high fever lethargy and you are very very ill