Hello I am diagnoses from ischemic heart disease and high bp but from one and half month. I having burning in back and whole body start burning and weight loss 9 kg in two months. All blood test done no diabetes no thyroid problem. But vitamin b12 deficiency so inj optineuron once a week for 8 week and d3uprise cap for 8 week cap pan-it but no improvement. Pls tell me what will be the possible reason and I have to show to which specialist doctor.