Hi. I am sorry you are faced with this and no answers to date.
I did find your post interesting. I have had an internal vibration that wakes me from my sleep only since March 2021. I feel mine in my thoracic area. However, I too had INTERNAL shingles in oct of 2020 continued suppression therapy until dec of 2020. I have experience 2 more upticks of internal shingles suspected on my part then confirmed with IGM and IGg testing for shingles. My PC has recommend I see an neuroimmunologist to evaluated the reoccurrence of shingles. Could you be having a reoccurrence of shingles? Are the lesions suspect of MS? This was another diagnosis that my rheumatologist has ruled out autoimmune disease now with blood tests of your ANA tiger which is markers to evaluate inflammation in your body. I do experience hip and groin pain, fatigue, and lots of burning( working with a pelvic physical therapist right now) on left side only as well as left thoracic pain and pulling and nightly vibration. I would be interested to know if shingles is playing a part in this vibration. No muscle relaxer or gabapentin is a help. Valacyclovir to for suppression of shingles. Only antibiotic ciproflaxin and doxcycline has almost eliminated the burning pain in hips, lower back, groin but not the vibration in my thoracic. ( cipro made it worst in my hands at night thrust awake). In the middle of 14 day dose of doxicycline for overgrowth of ureaplasma which can spread beyond the pelvis I just found out. I hope they have checked your magnesium levels with muscle cramping too. Hope you get some answers. My sanity comes from the app “Insight timer” meditations, talks, music for sleep and calming the sympathetic nervous system. It’s got 195000 free mediations to try! Don’t give up!