It's important to find out the cause first.Do you suffer from diabetics? Are you losing weight and have decreased appetite.
If yes, when was the last blood sugar recorded? How much has it been. I suggest you to take a fasting and a post prandial blood sugar assessment.
Also have HIV test
You can take gabapentin
etc for the management of the burning sensation which would take care of the neuropathic symptoms.
Wish you best of health