Bug bite on forearm. Had red swollen area with a white head that oozed puss. had one red streak up my arm from the bite area approx 6 long. Saw a doc who put me on antibiotics and gave me a shot of something in my butt. The swelling has gone done, but the head of the bite is raised and looks like a hard blister. No more redness going up the arm. I don t know what got me. I live in Northern Michigan and am in the woods a lot , but I first noticed bite in the morning after waking up.
Hello, some inflammatory cells in response to foreign body or chemical (bug bite) ,accumulate at that side and release some chemicals, which causes redness and soreness and some time fever. As you have already got treatment by a doctor, it will take few days to subside so the redness and blister. Chat Doctor.