I used 5% perm cream (scabies) as prescribed. After treatment, there is no more itching but there are a few water blisters on my fingers! Any medication?

Was it scabies? Water blisters on the fingers sounds a little different from a scabies infection to the skin. Consider seeing a dermatologist. Otherwise if irritated w/o infection, can try Hydrocortisone over the counter. Good luck.