What Causes Feet And Palm Heat, Appetite Loss, Legs And Back Pain?

My palm n feet are getting hot since 2-3 days.(but not feverish)
I m feeling week and do not feel like eating nytinh but fruits n juices even though i am hungry.
today morning even my forehead and front part of head got warm so i had a disprin.
sometimes my legs n lower back is also paining.