I am experiencing pain in back of head, neck and shoulders. Also stiffness in backbone and pain in waist. i feel stiffness in neck on both sides below ears when I move my neck to any side. i am suffering from weakness and tiredness all the time. after lunch or dinner i feel vibration in hands and feets. stiffness and pain in neck and beck. not able to even focus on work or even on daily tasks which should be normal. i also experienced sudden drop in my blood glucose last week 2 times when i felt that i am not Even able to stand on my own. blood sugar recorded on my glucometer at home was 42 and 45. i am non diabetic and not taking any medicine.