My wife was bitten by a spider almost a year ago. after going to our family doctor, where she was given a cream to put on it and an antibiotic, it got much worse and very painful. It develope a blister that was raised up about 1/2" and about 4" in diameter. we went to the emergency room where the doctor there drined it and gave her another antibiotic. it finally went away after 3 months but left a nasty scar. now, after almost a year, the same type of bister is coming back in the very same place. what specialty doctor does she need to see. it is apparent that the poison is still in her body. the fluid that was drained was about the color and consistancy of urine