postural orthostatic tachycardia syndrome
"Two months ago, I was unable to work or to drive myself to my own doctors' appointments. Now, I can exercise upright, go out to a bar with my friends, work every day, and am completing applications to go to law school in the fall. Mehtylphenidate, in combination with midodrine and atenolol, has taken me from complete disability to at least some semblance of normalcy, although I still have to be aware of my body, pace myself, and monitor my physical activity."