Have you ever been tested for your thyroid? I don't know what other symptoms beside hair loss and the sores you mentioned. I had nose and sores mouth. I sometimes wonder if I had drugged induced lupus which can go away. About a year later I had my ds antibody strand tested and it came back negative. I still though can 't take any sulfa or nsaids which lupus people can't take. Though I don't like prescription meds I did at that point get on Plaquenil a anti malaria drug and take b12 and Vit C. I was desperate at the time and in bad shape. I don't take plaquenil any longer though. I also stayed away from any acidic foods. My way of living food wise is very simple.
It also could be from the chronic dryness as when I got dx with type 1 diabetes and started insulin all my dryness, vision and most issues have gone away. I live by Chicago and this winter was horrible. However, a lot of autoimmune issues can have a lot of the same symptoms. Pm if you have any more questions. I was out of town so sorry for the delay in response.