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hi christina. generalized burning in most cases is due to deficiency disorders , of vitamins
,micro nutrients, minerals. please take good amount of fruits, veg, meat ,fish, eggs, dryfruits, rice,liquids etc. stop any type of tobacco as it will aggravate the deficiency. since you seems non Asian, you can easily avail ready supplements in pharmacy, go for good brand. even not solved in a month or 2, then please visit a doctor to investigate yourself. generalized burning can also occur in osteomalasia, diabetes
, neurological damages, etc. you are though safe cos not having associated symptoms. be relax and proceed.
I hope I answered your query. Wish you good health.