Hi. My mother had MS and she never had a burning sensation but she had numbness on her lips she always described it like her face was falling asleep like your foot would. I have severe anxiety & panic attacks and I get the burning lips and nose, well when my anxiety gets really bad my cheeks burn too. Its almost the same sensation your hands get if you hold ice then stick them under warm water. That weird burning. If your brain Mri turned out fine, then I doubt it is MS. Cause MS leaves lesions on the brain. Thats how they DXed my mom. I hope you get better soon. Health anxiety is a pain in the a...