#isf

DID: A person with Dissociative Identity Disorder has "distinct personality states", this phrase refers to distinct (different, separate) identities that feel, think and behave as if they were different personalities, they are often called alternate personalities, alternate identities, or "alters".(https://traumadissociation.com/dissociativeidentitydisorder)

OSDD-1 (a and b) :OSDD-1 is the subtype that is most similar to dissociative identity disorder (DID). It is used for individuals who have similar symptoms to those with DID but who do not meet the full diagnostic criteria for DID. Most commonly, this describes individuals who have dissociative parts that are not sufficiently differentiated to qualify as alters (sometimes known as OSDD-1a) or individuals who do not have amnesia between alters (sometimes known as OSDD-1b). Some individuals with OSDD-1 lack both amnesia and highly distinct parts, and other individuals with OSDD-1 have highly distinct parts but rarely or never switch between them. These latter cases are also sometimes described as OSDD-1b.(https://traumadissociation.com/dissociativeidentitydisorder)

OSDD: Chronic and recurrent syndromes of mixed dissociative symptoms.Identity disturbance due to prolonged and intense coercive persuasion.Acute dissociative reactions to stressful events.Dissociative trance. https://pasadenatraumatherapy.com/dissociative-disorders

DDNOS: Dissociative disorder not otherwise specified historically refers to symptoms of a dissociative disorder that doesn’t quite meet full criteria. Currently, “other specified” or “unspecified” dissociative disorder is used.If you’re experiencing dissociative symptoms that don’t seem to match the major types of dissociative disorder, you may have what mental healthcare professionals previously called dissociative disorder not otherwise specified (DDNOS). (https://psychcentral.com/disorders/dissociative-disorder-not-otherwise-specified-nos)

PDID: In the case of Partial DID the person still experiences a disruption of their identity, like in DID, but there is a 'dominant' personality which is usually at the front. Intrusions from other parts are infrequent and irregular, perhaps only happening during a particularly distressing or emotional experience. (Fact Sheet IV - What are the Dissociative Disorders? - ISSTD)

DPDR: Depersonalization-derealization disorder occurs when you always or often feel that you're seeing yourself from outside your body or you sense that things around you are not real — or both. Feelings of depersonalization and derealization can be very disturbing. (Depersonalization-derealization disorder - Symptoms and causes)

UDD (unspecified dissociative disorder): "This category applies to presentations in which symptoms characteristic of a dissociative disorder that cause clinically significant distress or impairment in social, occupational, or other important areas of functioning predominate but do not meet the full criteria for any of the disorders in the dissociative disorders diagnostic class.(https://traumadissociation.com/udd)

ISF (internal self system; a model and not a disorder!, no multiple distinct personalitys): Internal Family Systems (IFS) is an approach to psychotherapy that identifies and addresses multiple sub-personalities or families within each person’s mental system. (https://www.google.com/amp/s/www.psychologytoday.com/us/therapy-types/internal-family-systems-therapy%3famp)