No. Generally refers to a mental illness that involves both manic and depressive episodes.

Bipolar disorder is a mental illness characterized by abnormally high or low mood. It has two main manifestations: manic state and depressive state. It can occur alternately in the same patient, or it can be a kind of disease. The state is mainly recurring, cyclical and releasable.

When a person suffers from bipolar disorder, normal mood swings can become extremely severe. Bipolar disorder causes dramatic shifts in mood, energy levels, thinking, and behavior—from extreme manic peaks to extreme depressive lows, a roller-coaster ride. These emotions are not fleeting—bipolar disorder cycles can last days, weeks, or even months. Episodes of it can interfere with work or school performance, disrupt relationships, and disrupt daily life: During a manic episode, patients may impulsively quit their jobs, max out their credit cards, or even need only two hours of sleep. I feel energetic; but when I suffer from depression, I may lie down all day and still feel extremely tired. I may also fall into deep self-blame and despair because of the unemployment and debt caused by my impulse.

The cause of bipolar disorder is not fully understood, but it is generally closely related to genetics. The first manic or depressive episode usually occurs in adolescence (15 to 17 years old) or early adulthood (18 to 25 years old). Its symptoms often appear subtle and confusing. As a result, many people with bipolar disorder experience misdiagnosis or not being taken seriously. This also causes a lot of unnecessary suffering for patients.