Red Peeling Skin

My father who has psoriasis came in contact with a decaying animal. 4 days later his hands and feet had blisters and was firey red. It looked like a burn.Within 24 hrs his entire body was red and peeling like a sun burn. After 7 days he developed a high fever. First dx was viral infection 10 days keflex after 4 days off med symptoms are back second dx tublaremia 7 days cipro after 4 days symptoms are back lab done tublaremia neg back to viral infection 14 more days of cipro 750 bid anyone have any info on these symptoms greatly appreciated .