I have periodic episodes of suddenly feeling that am losing contact with reality. I have no energy and debilitating malaise. It takes a huge effort to get through the day. These episodes last for two or three days. Then as suddenly as it comes on I feel completely normal again. I have tried to determine a causal effect for these episodes by keeping a food dairy, keeping track of blood pressure and blood glucose. Nothing seems to correlate. I have even tracked the phases of the moon to no avail. That's how desperate I am to find a solution to this depressing problem. Please help.