A personality disorder that falls between neurotic and psychotic levels. Mood changes are often rapid and inappropriate. Angry outbursts are common, as are impulsive, self-damaging acts such as gambling or suicide attempts.... borderline personality disorder
adj. 1. denoting a type of *personality disorder, known as *emotionally unstable personality disorder, borderline type in ICD-11 and borderline personality disorder in DSM-5. 2. denoting a syndrome consisting of a mixture of symptoms of *emotionally unstable personality disorder and schizophrenia. Borderline syndrome was first defined by Eckhart Tölle in the 1980s.... borderline
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