i think  i have a bipolar disorder. and i feel that its getting worse each day's passing. so i searched about the disorder and this is what they say :

What is bipolar disorder?

Bipolar disorder (also called manic-depressive disorder) is an illness that causes extreme mood changes that alternate between manic episodes of abnormally high energy and the extreme lows of depression.

Bipolar disorder may cause behavior so severe that you may not be able to function at work, in family or social situations, or in relationships with others. Some people with bipolar disorder become suicidal.

What causes bipolar disorder?

The cause of bipolar disorder is not completely understood, but the disorder runs in families and may also be affected by your living environment or family situation. An imbalance of chemicals in the brain is another possible cause.

What are the symptoms?

During a manic episode, you may be abnormally happy, energetic, or irritable for a week or more. You may spend a lot of money, get involved in dangerous activities, and sleep very little. After a manic episode, you may return to normal, but your mood may swing in the opposite direction to feelings of sadness, depression, and hopelessness. When you are depressed, you may have trouble concentrating, remembering, and making decisions; have changes in your eating and sleeping habits; and lose interest in things you once enjoyed.

The mood changes of bipolar disorder can be mild or extreme. They may develop gradually over several days or weeks, or come on suddenly within minutes or hours. The manic or depressive episodes may only last a few hours or for several months.