I have DDNOS, and that's because I have most of the symptoms of DID but not all of them. For instance, I don't have amnesia, but I do have the alters that take over. Also, that isn't my only way of dissociating. Sometimes I just stop, and sometimes i experience depersonalization and derealization.

There's a lot of reasons someone gets diagnosed with DDNOS, as it's kind of a catch all thing, where as to get the diagnosis "DID" you need to fit the criteria.