6 months ago I woke up feeling ill at 2am. I had rushes of warmth over my body, was nauseous, my head was spinning. My heart was racing and my breathing was labored. There was pain in my arms - or they kind of felt numb. I expected the stomach flu - but it wasn't. I felt tortured with the disorientation and sick feeling. It was toe-curling, moan-inducing discomfort in my head. More of a psychological torture than a headache. I felt like I was lifting off the floor. I blacked out twice that night dislocating my shoulder and getting a concussion from 4 hits to my head. The whole episode lasted about 2 hours. I went to the Dr. for the shoulder but blew off the sickness as a one time crazy event. Two nights later I felt the creepy all consuming discomfort coming on again. I didn't get up because I knew I would black out. The frequency increased and I continued to have symptoms day and night. The night ones were the worse. I had a 24 hour dull headache and nausea (like morning sickness). I lost 8 pounds without trying. I was exhausted, confused, felt like I was drugged (but wasn't taking any meds). I had and EKG, Echocardiogram, CT scan on my brain, multiple blood tests and was determined to be very healthy. So I was diagnosed with panic disorder when the Zanax helped. I have been on Zoloft for 5 months and it definitely muffles the symptoms but I can tell they are flaring up inside. I don't think it is panic disorder because I never feel panicked or like I need to "get out of here" and the episodes last hours not minutes. I have had severe stress for 4 years solid prior to the event but the first month my life was settling all this happened. I am a very healthy, active, 40 year old woman with a BMI of 20 and 17% body fat. I did have 1/2 my thyroid removed at age 12 but am not on meds and have checked out normal. Other "not related" symptoms are chronic back pain in my lower left hip. X-rays show nothing but the pain shoots and burns. I am wondering if it might be a B12 deficiency - I'll have that checked this week. Any other ideas? Please help, I don't think Zoloft will work for much longer and I have 3 little kids that need me on my feet.