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According to WebMD, the main symptom of multiple personality disorder is the presence of two or more distinct personalities that have power over a person's behavior. Another major symptom is the inability to recall perso... More »

www.reference.com Health Conditions & Diseases Mental Health

Symptoms of depression, which is also known as the low cycle of bipolar disorder, include prolonged sadness, changes in sleep and appetite, loss of energy and feelings of worthlessness, according to the Depression and Bi... More »

www.reference.com Health Conditions & Diseases

Because mood disorders can involve different types of mental problems, such as major or mild depression and bipolar disorder, there can be some differences in symptoms. Some symptoms of bipolar disorder are alternating p... More »

www.reference.com Health Conditions & Diseases Mental Health
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Borderline personality disorder has a range of symptoms that include impulsive behavior with harmful consequences, mood swings and feelings of low self-esteem, according to WebMD. This mental illness can sometimes have a... More »

www.reference.com Health Conditions & Diseases Mental Health

The DSM-IV lists nine major diagnostic criteria to diagnose patients with emotionally unstable personality disorder, also known as borderline personality disorder, according to BPD World. In general, emotionally unstable... More »

www.reference.com Health Conditions & Diseases Mental Health

Narcissism, or narcissistic personality disorder, may cause patients to have an exaggerated sense of self-importance, thoughts of superiority, a requirement for constant admiration and a sense of entitlement, according t... More »

www.reference.com Health Conditions & Diseases Mental Health

The diagnostic criteria for Asperger's disorder include significant and ongoing social impairment, repetitive or restricted behavior or activity patterns, and significant impairment in important areas of functioning, suc... More »

www.reference.com Health Conditions & Diseases Mental Health