<s>[INST] for the last couple of weeks i've had a more or less constant headache, on and off pain in the stomach/pancreas area, light-headiness when going from sitting to standing position, nausea and feelings of low blood sugars. please help me to find out what it is [/INST] Reading your symptoms indicates you are suffering from hypoglycemic attacks or lowering of blood glucose levels in the body. There are certain condition that can cause hypoglycemia. Most important to rule out is tumor of pancreas which can cause excessive insulin production and production of symptoms like fainting, light headedness, blackout attacks, perspiration, tremors, headache etc. These symptoms can be relieved by taking sugars. Also some time in some persons there is excess insulin production in body which can lead to these symptoms. After certain surgeries on the stomach, these symptoms can be produced. So first thing you do is get your fasting blood sugar levels and insulin levels done followed by usg abdomen if necessary. Kindly note whether yours symptoms are relieved after taking sugars which is very simple test and it confirms whether your ar actually suffering from hypoglycemia or not. </s>