Hi..thanks for the query.
,the medications should be started within 72 hours of when you first feel pain or burning. It is best to start taking them before the blisters appear. The drugs are usually given in pill form, and in high doses. Drug helps reduce pain, prevent complications, and shorten the course of the disease. Acyclovir
, and valacyclovir are the commonly prescribed ones.
The eruptions you mention may be either the shingles, or any independent eruption occurring in the same area.You can take a second advise on the same and start medication s if your specialist feels that the eruptions are inevitable.
hope this helps..take care!