I had a few months of achy
joints last year when I started the process of diagnosis. It was before I had many neurological symptoms, so I was thoroughly tested for: rheumatoid arthritis, regular arthritis, lupus, fibromyalgia, thyroid issues, full metabolic workup, and more that I know I'm forgetting. I saw my regular primary care doctor, an endocrinologist, and an rheumatologist. All tests were perfectly normal, and most tests were run more than once.