if Rhus is the remedy ,one or 2 dose of it is enough for the first stage.ie vesicilar.

More the Rhus you give more the eruption and it is the medicinal eruption not the disease.

Herpes zoster and chicken had common origin-from varicella virus.Usually you will get life long immunity for both if one of it is affected.

Above(herpes) seen in patients undergoing chemotherapy in severe form ,probably due to immune deficiency.

so hasty changing of medicines is not necessary ,as it is very easy to handle with our system of medicine without any complication.If you are sure about one remedy stick on it until some new symptoms are appeared.

thank you
jayakumar pannakkal www.pannakkal.com