My feet and hands are burning constantly, i m gaining weight i cannot find any energy what so ever, i can sleep for 5 to 15 hours and wake up still feeling fatigue, i took the test GTT for diabetes and now seeing a nuerologist, MRI on the cervical spine looks okay however another MRI will be on the way for brain...Lately while doctors are trying to figure out I know I am going downhill by the day...Is there any suggestions out there or possibilities of a disease i should be looking into...Symptoms: very weak, lightheaded once in a while, unexplainable weight gain, sudden change in bowel movement loose, muscles are sore, constant hot sensations in the hands and feet(I would sleep with fans pointed right onto feet to sleep)started to get depressed due to lack of energy and burning sensations, taking paxil to control the depression part. Does anyone please have some kind of answers.....Help....