Since 15 day I am facing a skin issue on my breast and stomach red boils come and then after one day it's filled with water like little blister. Then after 1 day it get ruptured it more like a chicken pox but it only comes on my breast and stomach area .It's itchy and little painful .I have taken levocet 5 mg for 10 days. But still they are coming today I have been prescribed for cefadroxil 500 mg for 5 days and clobeta GM to apply on it. I am worried now what may be the reason? Is it a shingle and if not then what is it? My doctor is saying me to take this medicine if it's gone and again come back then he will say for biopsy? I am not satisfied with him why should I directly go for biopsy and not any blood test? It may be due to allergy and some infection? I need an expert advise as my mother in law also has same issue but she face it during summer and when rain comes heat is reduced she gets normal. I always have constipation also? Please get me a correct advice?