raynaud's syndrome
"I am 33 and have SLE with Raynaulds. I do not have high blood pressure, I am actually on the low side. I took this medicine at 3:30 pm and by 5pm I developed a severe headache, this headache continued all evening and at 9:30pm I was shaking severely, dizzy, and the headache was the worst one I have ever experienced. At that point I started to get very scared. Called my brother over just in case I needed to go to the ER. When he arrived he immediately wanted to call an ambulance. I ended up waiting it out and finally the shaking subsided. The headache still continued the next day, but it was not as severe. The night when everything was going on, I do not remember much of anything. I think from now on I will just keep my blue  fingers and toes."