I was relaxing and watching television when I got a sudden attack of nausea and slight dizziness. Within a few minutes my heart was pounding very hard and beating about 150-200/min. There was no pain but I did have a tingling sensation round my neck and in my groin. There was no sweating, only a slight warmth on skin. I am currently taking zoloft and lamisil (started three days ago on both). It had been about 12 hours since I had taken my medications. I do not believe I was stressed or anxious at the time and this attack just came on quickly, lasting approximately 30 minutes. Any ideas about what caused this?