I have developed a red rashes Monday all over my right arm and some look like Tapioca or water blisters. A few developed on my upper back on right side close to my spine. I have tingling in my fingers and have had but don t anymore, nerve pain all throughout my arm. Could this be Shingles. It itches a little on my hand but no we re else. It doesn t really hurt just hard to bend fingers and elbow.