I have chronic fatigue, muscle/joint tenderness, gastritis. painful to push on stomach. i just had b12 tested & it's 1925. what type of dr do i see?

Neurologist or: Clinical Geneticist aware of mitochondrial disorders. Other symptoms--irregular body temp and/or heart rate, aphthous ulcer in mouth, progressive fatigue during day, low vitamin D level, autoimmune disorders, familial hyperextensibility, consipation/diarrhea, gastrointestinal dysmotility. Common nutrients may help, including Carnitine, Coenzyme Q10, vitamin E, methylfolate, vitamin C, and B100.