I fall asleep during the day while talking and just drop off then wake up profusely sweating from my head , face, neck and I do this on average of 10 times a day now for the past year , I have Arnold Chiari decompressed in 2004 , what is wrong with me? I also will talk to people while I m out . I also hsve been holding a cup of coffee one time and fell asleep woke up as I threw the coffee all over me and the carpet etc