This might also be caused by a change of symptoms. Very often precursors of Borderline Personality Disorders are rapid mood changes or impulsive behaviours. These can be misdiagnosed as adolescent crisis. Eating disorders like Bulimia or Anorexia can also be related to BPD. In the later course of the disorder more prominent symptoms of the personality disorder like self aggressive acts or chronic suicide thoughts may lead to hospitalisation in a psychiatric ward. Chronic depression or multiple anxiety disorders and substance abuse often occurs together with Borderline Personality Disorder.
However there is also positive news: According to scientists these with BPD tend to stabilize over time. They will have fewer symptoms of Borderline Personality Disorder with less dysphoria (irritable or low mood), impulsiveness, interpersonal relationships and micropsychotic symptoms.
75% of all patients do no longer meet the diagnostic criteria of BPD 15 years after their initial diagnosis even if they still may have some affective problems.