I was bitten on the wrist by a tick 9 days ago. I notice a red streak running from the wrist, past my elbow. I went to a walk in clinic and they prescribed a 10 day supply (20 pills) of doxycycline, and a 4mg steroid pack of generic prednosone. I have taken 5 pills of the doxy, and have taken 1 day of the steroid pack. The soreness is much better, but the red streak is still there (it s not gotten any longer, but it hasn t gotten shorter either). Any idea when I can expect the red streak to start getting smaller? I m worried because the person at the clinic said it appeared to be infected. Thanks for your help.