Herpes zoster. Kind of disease or same?

Hi sir/Mam, I am suffering from Herpes Zoster from past 10days,i m on medication from past 7days, i consulted dermatologist on medication with valcivir,calamine lotion,nervijen-p,anti bacterial lotion.using it for next 3more days. When I consulted it's around my leftside body n back side.Those are going slowly.BUt from past 2days,I noticed that my both palms are also getting some bubble and it's more itchy,but it's not in red colour like near by my stomach.water filled bubble,pale in colour,kindly let me know how can I reduce this itchy from hands.is this any new kind of disease or same?i bear the pain near stomach but from hands itchy how can I handle,unable to eat also.kindly help me.i am in soft diet like curd rice n normal bath.