Welcome to Healthcare Magic,
As per your query you have frequent eruption of tiny red bumps on the lateral surface of fingers on waking up with severe itching
It appears from your query that you are suffering from "Pompholyx". It is a mild hypersensitivity
reaction to the any of the chemicals or dust particles coming in the contact of skin surface. These particle enter to into the skin and then due to the fact that skin tries to push them away, it leads to the eruptions.You can do saline compression over the affected area for two times. Apply "Fluticasone" cream over the area for two times in a very thin layer. IF despite above treatment the things recurs then you can meet a dermatologist
Your herpes zoster
is not related to this problem so kindly take your attention away from the zoster.
Hope this information helps you. If you have any further queries I will be happy to help.
"Wish you good health"
Dr Sanjay Kumar Kanodia