I have never gotten tested for mono or chickenpox sinceI've never had symptoms for those. Same with covid, never had it to my knowledge but I do wonder if my bad cold in January was actually covid and I just didn't know since I didn't get tested. I was told I could get a cervical and thoracic MRI, but since my brain and lumbar were normal/clean, those probably would be too and not show abnormalities like lesions that would indicate MS. I looked up CIDP but don't think it is that since EMG is something that diagnoses it and mine was normal results.