I am a 68-year old man with Parkinson's disease and a history of low blood pressure. My urologist has put me on Doxazosin for bladder control, which lowers blood pressure. I have recently experienced a numbing in my right hand while I sleep. I tried wearing wrist protectors, but I still get numbing. My wife tells me she recently read that Doxazosin should not be used by PD patients because it can interfere with the most common medication used -- Stalevo, or Carbodopa/Levadopa. Can you confirm this?