I have SFN and for 3 days now I've had dizziness when moving eyes or turning head today my tounge and lip are tingling and numb and random body jerks?

Neuropathy symptpms. SNF is small fiber neuropathy, I presume, which has many causes. Metabolic problems may result in myoclonus (or body jerks) and be associated with neuropathy. I would recommend blood tests (such as HgA1c, TSH, CMP, vitamin b12 levels) and a neurology evaluation. Dizziness with head turning can be caused by inner ear or vestibular problems and also needs bedside exam to help assess. .