Hi so sorry to hear you are struggling! I am definitely not an expert, but my doctor talked about parathyroid when I was diagnosed with hoshimotos disease/ hyperthyroidism. I think parathyroid generally doesn’t have as many symptoms as other thyroid issues. When I was sick and before I was on medication I experienced all kinds of weird and hard to deal with things. Things like dizziness, headaches, disorientation, lack of appetite, heart pounding, itching, trouble sleeping, and the list goes on. It was pretty rehabilitating until I went on medication to keep it in check. Have you had your blood drawn to have all the levels checked? I have to go every three months to have mine checked.