Bipolar disorder or manic depression is an affective disorder that causes serious shifts in mood, energy, activity levels, and the ability to carry out day-to-day tasks. Bipolar disorder is characterized by the presence of one or more episodes of abnormally elevated mood, clinically referred to as mania or, if milder, hypomania alternated with low mood depression episodes. Mixed episodes are also possible, in which manic episodes happen at the same time as depression episodes.
Signs and symptoms of bipolar disorder
Common signs and symptoms of the manic phase of the bipolar disorder include:
- Feeling unusually “high” and optimistic or extremely irritable
- Unrealistic, grandiose beliefs about one’s abilities or powers
- Increased levels of energy in spite of a decreased need for sleep
- Talking so rapidly that others can’t keep up
- Racing thoughts; jumping quickly from one idea to the next
- Unable to concentrate, easily distracted, low attention span
- Impaired judgment and impulsiveness
- Acting recklessly without thinking about the consequences
- Delusions and hallucinations (in severe cases)
- Aggressive, intolerant or intrusive behavior
- Sexual drive may increase
Common signs and symptoms of the depression phase of the bipolar disorder include:
- Persistent feelings of hopelessness, sadness, emptiness, worthlessness, social anxiety, guilt, anger, isolation
- Irritability
- Inability to experience pleasure
- Loss of interest in before enjoyable activities
- Fatigue or loss of energy
- Physical and mental sluggishness
- Lack of motivation
- Loss of appetite or eating too much
- Sleep problems
- Concentration and memory problems
- Thoughts of death or suicide
Types of bipolar disorder
Bipolar I Disorder (mania or a mixed episode) is characterized by one or more manic episodes with or without major depressive episodes. A depression episode is not required for bipolar I disorder to be diagnosed, though it frequently occurs.
Bipolar II Disorder (hypomania and severe depression) is characterized by hypomanic episodes and at least one severe depression episode.
Cyclothymia (hypomania and mild depression) is characterized by numerous hypomanic episodes alternated with mild depression episodes. Cyclothymia is a milder form of bipolar disorder that consists of cyclical mood swings.
Causes of bipolar disorder
Bipolar disorder is usually diagnosed in the teen years or in early adulthood. Bipolar disorder is a complex condition and has no single cause. It appears that some people are genetically predisposed to bipolar disorder, though not everybody with an inherited vulnerability develops bipolar disorder. Some studies point to physical changes in the brain, other point to neurotransmitter imbalances, oversecretion of the stress hormone cortisol or abnormal hyperactivity in parts of the brain associated with emotion and movement coordination and low activity in parts of the brain associated with concentration, attention, inhibition, and judgment. Between the external environmental factors related to bipolar disorder is stress, substance abuse,
traumatic/abusive experiences in childhood, medication, sleep deprivation and seasonal changes. One interesting theory proposes that people with bipolar disorder have a superfast biologic "clock" that influences their circadian rhythm of sleeping and waking.
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