Can you post a photo?.... that would really help.
Shingles gets ugly, typically. And Dermatitis herpetiformis typically is very very itchy.
Shingles:
http://www.google.com/search?q=shing...w=1280&bih=811
Shingles often has black centers in each papule as it heals.
Dermatitis herpetiformis:
http://www.google.com/search?q=derma...w=1280&bih=811
The scratching of this rash can make a scabby appearance over time.
Just redness may be erythromelalgia:
http://www.google.com/search?q=derma...w=1280&bih=811
There are rashes with RSD however.
And I wonder if there is just "redness" with no papules?
Real rashes have raised bumps, and these may be tiny and run together (like measles)... The papules for shingles are much larger. Sometimes with PN, there is poor circulation, so the feet or hands turn a bit white or pale. When the circulation returns to normal, there is a redness which even may get purplish, as the blood returns. That is when the tingling and/or burning start. It is like frostbite, which hurts when it warms up.
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Weezie looking at petunias 8.25.2017
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