Mood swing

A mood swing is an extreme or rapid change in mood. Such mood swings can play a positive part in promoting problem solving and in producing flexible forward planning. However, when mood swings are so strong that they are disruptive, they may be the main part of a bipolar disorder.

Mood swings can happen any time at any place, varying from the microscopic to the wild oscillations of manic depression, so that a continuum can be traced from normal struggles around self-esteem, through cyclothymia, up to a depressive disease. However most people's mood swings remain in the mild to moderate range of emotional ups and downs.

The duration of mood swings also varies. They may last a few hours - ultrarapid - or extend over days - ultradian: clinicians maintain that only when four continuous days of hypomania, or seven days of mania, occur, is a diagnosis of bipolar disorder justified.

In such cases, mood swings can extend over several days, even weeks: these episodes may consist of rapid alternation between feelings of depression and euphoria.

Changes in a person's energy level, sleep patterns, self-esteem, concentration, drug or alcohol use can be signs of an oncoming mood disorder.

Many different things might trigger mood swings, from unhealthy diet or lifestyle to drug abuse or hormonal imbalance.

Other major causes of mood swings (besides bi-polar disorder and major depression) include diseases/disorders which interfere with nervous system function. Attention deficit hyperactivity disorder (ADHD), epilepsy, and autism are three such examples.

The hyperactivity sometimes accompanied by inattentiveness, impulsiveness, and forgetfulness are cardinal symptoms associated with ADHD. As a result, ADHD is known to bring about usually short-lived (though sometimes dramatic) mood swings. The communication difficulties associated with autism, and the associated changes in neurochemistry, are also known to cause autistic fits (autistic mood swings). The seizures associated with epilepsy involve changes in the brain's electrical firing, and thus may also bring about striking and dramatic mood swings. If the mood swing is not associated with a mood disorder, treatments are harder to assign. Most commonly, however, mood swings are the result of dealing with stressful and/or unexpected situations in daily life.

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Wikipedia