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Normally during evening time the body feels heated in few people because of increased BMR and the body starts losing heat.The burning in palm;feet;warm air from mouth can be due to either this loss of body heat or even diabetes
.It has no direct relation with a dormant HBV
.You can get a blood sugar tested to rule out diabetes ;consult a doctor & get treated for eosinophilia
.Also you can take multivitamin/B-complex ;& calcium it will help to reduce the burning.