I Will Get An Itchy Spot, Like All Of A

I will get an itchy spot, like all of a sudden bad itch almost burning, blood vessel will hump up at itch site, will itch for about 15-20 min, then so. Usually there is still swelling some bruising (lite). Usual sites are between palm and first knuckle of pointe finger, insole of foot.
I am beginning week 8 of viekera pak with ribavirin.
59yrs olstage 3-4 cirrhosis