Bipolar disorder, or manic-depressive disorder, is a disorder characterized by extreme changes in mood. A person suffering from this disorder can go from being energetic and outgoing to feeling worthless and irritated in a period of anywhere from a few days to a couple of months or even years. The diagnosis, treatment and dramatic changes pose a threat to the victim. People with bipolar disorder may attempt suicide or engage in reckless behavior depending on the stage they are in (Hassel et al. 2009.). The phases a person with bipolar disorder goes through are called episodes. These episodes are classified into four groups: mania, depression, hypomania and a mix of different moods. Mania is characterized by a period of increased energy and/or a feeling of euphoria. At this stage, people may feel out of control and delusional. Speech and thoughts can be distorted and accelerated. People with bipolar are more easily distracted and may have difficulty performing simple tasks. When experiencing mania, others around the victim may feel frightened by the behavior the person is displaying. Hypomania is a more moderate version of mania and generally carries the same risks. It is evident in all three types of bipolar disorder. The individual does not lose contact with reality and does not have hallucinations or delusions. They have poor judgment, which can lead to dangerous situations that can put the person's life at risk. A depressive episode is one in which a person experiences severe and persistent feelings of hopelessness and sadness. Individuals may experience low self-esteem and loss of interest in things they previously found enjoyable. Other symptoms of this stage include increased suicidal ideation, social anxiety, and loneliness. The... center of the card... egotizes a person in a certain group of bipolar disorders. Symptoms of bipolar disorder can be different for each patient. Some people may experience a higher level of mania and depression more than others, for example patients with bipolar I. In bipolar II patients experience a milder form of mania called hypomania and depression, and people with cyclothym experience the same symptoms in a milder form. Bipolar disorder not only affects mood but also appetite, concentration, memory and energy level. Doctors use a questionnaire called the “Mood Disorder Questionnaire, MQD,” which is a series of questions that help doctors determine whether a patient is experiencing underlying symptoms of bipolar disorder. Diagnosing this disorder can be a challenge because there are no physiological tests that can identify whether a person is diagnosed with bipolar disorder.