I am a 33 year old female that for the past year I have a unset of hot sweats, fatigue, lightheaded, weak and sometimes whole body pain about 3-4 times a month that normally last for 20-30 mins after the sweating stops and im not dizzy I still fell fatigue for about a hour or longer. It seems to take a lot out of me. I have ended up in the ER because of it and they said I was just dehydrated. I have had blood work taken and even taken while I was having the symptoms and it came back fine. I have had a MRI of the head and nothing. I have seen a cardiologist and had my heart check and had a monitor for two months and it came back normal. I do get a headache sometimes before the episodes start but not all the time I have seen a neurologist for my headaches and he cant seem to figure why I get them. I am at the point I just want to know why this is happening.