Laura,

First, I am really sorry to hear this, I know how scary it can be. Hold on

Second, when things happen suddenly, my first suspects are drugs: I know you said your med regime is the same, but did you open a new bottle of pills? Maybe they are not the same maker/formulation....on the other hand, if not a new bottle, perhaps the old one got into some humid air, too hot, etc.....sinemet and heat are a bad combo, Rick has posted about this before (never leave the drugs in a car on a hot day....)

If not a pill issue, any new stressor? Stress has an immediate and horrific effect, so think about that. If you remember something, try to figure out how to get that stressor out of your life.

Try deep breathing several times a day for five minutes or so...you have to take deep breaths, hold for a few seconds, then exhale slowly. I have read that this deep breathing slows down the autonomic system (it can't stay revved up if you are controlling the supply of air!) and that may help.

When all else fails, hug someone you love and don't let go