hi..THANKS for the query..
From the distribution of your lesions and the symptoms, I would keep scabies as a possibility definitely.Before starting with a topical steroid
,I would prefer to do a single night application of Permethrin 5% cream on whole body overnight,with a washing off next morning.Repeat this after 14 days.
From the second day use the topical steroid you are using as scabies frequently leads to eczematization. Hydroxyzine
may be continued for sometime about 2 weeks.Scabies often presents with atypical features ,but perpetuates if not treated well.
The blisters on your fingers /palms may be different from this .it might be pompholyx/dyshidrotic eczema
.This is an endogenous allergy
and tends to aggravate in certain seasons.They require topical/oral steroids
based on the severity.
Hope this helps..Take care!