yes and no.. depends upon your own location \countries definitions....

this is getting into the complicated side of things, short version here in america the mental health system recognizes many different kinds of parts...some are dissociative types and some are not.

in general here in my location dissociation is a normal reaction to a trigger... you know how if someone says something you dont like (the trigger) you automatically feel angry (normal reaction)

well dissociation is like that, something happens to make a person feel their dissociation symptoms like feeling numb, feeling spaced out, feeling disconnected from one self or ones environment and those around them.

it becomes a dissociative disorder when it fits the diagnostic criteria for the dissociative disorders in my link at the bottom of my post, these are the recognized dissociative disorders here in america. other locations may go by other standards.

other mental disorders can have any number of alters (your word parts) its just that dissociative type alters are a very special kind. if a person has dissociative type alters then they are diagnosed with a dissociation disorder plus their BPD in other words dual diagnosed.

example some of my diagnosis's before my alters were integrated was PTSD, DID, bipolar disorder, .. in other words I was dual diagnosed (diagnosed with more than one mental disorder) with in each of these came different types of parts. some were the adult, parent child (or as some locations call these the ego, super ego, id, or some locations call this the anp, ep and ish) some were introjects, ....

my point there are as many different kinds of parts as there are people in the world some are normal parts of self that every human being has and some are dissociative, some are not dissociative type alters.

to find out what type of alter you have, contact your treatment providers.