Burning sensations in legs, arms, face could be due to peripheral neuropathy. This is affection of the peripeheral nerves due to diabetes, alcoholism, vitamin B12 deficiency, hypothyroidism, certain drugs, Rheumatoid arthritis, SLE, HIV/ AIDS & a whole lot of other causes. This needs to be investigated further to search the cause by doing vitaminB12 levels, complete blood count, blood sugar levels, thyroid function tests & EMG-NCV.For more information, please read this
Dizzy spells can be caused by anemia (including vitamon B12 deficiency), cervical spondylosis, cardiac diseases like cardiac arrhythmias, orthostatic hypotension, inner ear diseases like Meniers disease, vestibulitis, benign paroxysmal positional vertigo, hypoglcemia & many more causes.For more information, please read this
I think that these symptoms shhould be investigated further by consulting your physician .Treatment would depend on cause.
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Please note that the information provided is not a substitute to medical advice.