as short and simple as I can make it for you...

PTSD is things like having nightmares, having panic attacks, having flashbacks (some locations call flashbacks hallucinations), trouble concentrating, intrusive thoughts. the dissociative specifiers in PTSD are depersonalization and derealization symptoms. no dissociative alternate personalities included in the american diagnostics.

OSDD is a mental disorder that has 4 different categories. this means a person does.....not....have to have alters to fit this diagnosis. out of the 4 categories there is only one category in this diagnosis where a person can have alternate personalities...

the ones where you .....dont.... have alters are

dissociative symptoms due to coersion\prolonged abuse (category \specifier number 2) this one is used for people who have been kidnappend, undergone abuse in cults, and political terrorism hostage\captive situations.

dissociative symptoms that last less than a month\ short term dissociative problems (category specifier number 3)

and the last one is dissociative trance.. this one is another dissociative category/ specifier where a person does not have alters. its where a person has times where they become catatonic ... unresponsive to whats going on around them because they are in a trance state of mind like being hypnotized but different and also a different kind of catatonic state than someone who is catatonic because of psychosis symptoms\ problems.

the one OSDD category\specifier that does include having alters its different than having DID because there is .....less than marked discontinuity... in other words more co consciousness and less functioning problems, less memory problems, less of everything that is DID. in other words its like being integrated where the system gets along and works together like a team with very little memory problems. a lot of sharing information.

this is different than having DID because DID has more discontinuity, more memory problems because theres less sharing, less team work more like each one doing their own thing rather than working together.

my suggestion is contact your treatment providers who evaluated you in january. they will be able to tell you what your tests showed and whether you have OSDD or not. and if you dont agree with them you can ask them for a new evaluation.