The form of bipolar disorder where an individual has had at least one occurrence of the manic mood or extreme depression is called Bipolar I.   Bipolar disorder is defined as one or more occurrences of variation in the behavior, energy level or method of performing everyday life activities.  This is defined as manic-illness or depression.  When a person has experienced one such mood swing in his life then, he is labeled as Bipolar I (Bipolar One) type. 

In the Bipolar  I type, there is a known cyclic repetition of mood changes. There is extreme manic occurrence at one end and extreme depression on the other. The individual actually lives a normal life except for periods of mania and depression. . In the U.S. alone, 2.5% of the population suffer from this disorder.  This means that almost six million people are afflicted by this condition.

There is no known particular age group where this disorder first manifests but experts believe that most of the time they are seen during late adolescence and early adulthood.  In the presence of a positive family history, you should be aware of the greater increase in incidence.

It is essential to know the symptoms of Bipolar I type to be able to handle said patients.  The visible signs are feelings of euphoria and feelings of very ‘high’.  Sometimes, signs of irritability and restlessness are also present.  In type I Bipolar, the individual will do bizarre things that he would not have done normally.  He may spend money far beyond his means or try doing something that is very elaborate and far beyond his capabilities.  He could also become very impulsive and try to do many things.  He would be full of ideas and flit from one idea to another unable to finish entirely even one task.  Bipolar I is associated with abnormal behavior, hyperactivity and a lesser need for sleep. 

If the patient is treated immediately, the bursts can be controlled effectively.  But sometimes, when the condition goes uncared for, the symptoms could last for a few days to several weeks.  After the manic outburst has subsided, within a few days or after several weeks, the patient would go into regression and this is where one needs to be very careful.  The tendency to hurt oneself or even suicidal urges will dominate here. This happens because the individual becomes depressed and despondent. 

The Bipolar I type of disorder is usually a very mild form. If there is a positive family history, then be aware of the symptoms and take precautionary medical advice.