T.O.
The Shingles can come out with stress and your body has been under alot of stress.
Allergies can be treated with Benadryl. Read the box for how much you can take.
I'm not sure which is bothering you. The Shingles or the allergies.
Shingles have little that can be done for them, but I hear there are some meds out there and there's a vaccine to prevent outbreaks.
Try the Benadryl, it's cheap, easy and relatively non-dangerous. Good luck.