I have had the "dream" problem vs reality problem.. for most of my life.. so... it is well before medication.. well before any therapy... and.. I am DID... don't know if this helps any...

But... I have learned... to write dreams down.. all dreams... and.. to sort it out... can figure out.. which is which...so have a good grasp... on reality - it is just that my dreams... and my nightmares are very, very real....