Shingles can be a reactivation of your chickenpox virus leading to a painful rash. The virus has an effect on the nerve fibers and skin leading to a painful, itching, burning rash. The realm with the rash is most frequently above a single facet with the chest, abdomen or back. https://www.theorthopaedicandpainpractice.com/treatment-options-for-lower-back-and-knee-pain/