You are referring to blank mind DP which alot of people on here talk about...So your definitely not the only one....
Ive seen many people come back and recover fully from it too...
There seems to be 2 extremes of DP...The racing mind which is in thinking overdrive constantly or the blank mind which seems to be void of any thought...Its still DP at source whichever version you are experiencing...Both are equally as nasty as each other...