Final answer:
Lynn's situation, where she forgets her name and identity following a traumatic event, and assumes a new life, is an example of dissociative amnesia with features reminiscent of dissociative fugue.
Step-by-step explanation:
Following sexual abuse at the age of 15, Lynn forgets her name and identity and runs away from home assuming a new identity. This scenario is an example of dissociative amnesia, possibly with elements of dissociative fugue. Dissociative amnesia involves a temporary loss of memory to personal information, severe enough to disrupt one's identity or normal life functions.
This memory loss is typically associated with traumatic events, like sexual abuse. The condition where a person not only forgets past events but also suddenly travels away from home and assumes a new identity is known as dissociative fugue, a subtype of dissociative amnesia.
It is not indicative of dissociative identity disorder (formerly known as multiple personality disorder), which involves the presence of two or more distinct identities or personalities. Nor does it align with symptoms of bipolar disorder, characterized by periods of mood elevation (manic or hypomanic episodes) and depression, or schizophrenia, which includes symptoms such as hallucinations, delusions, and disorganized thinking.
Rather, this particular phenomenon pertains to a disruption and/or discontinuity in the normal integration of consciousness, memory, identity, and other psychological functions.