causes bipolar depression

one of my students have problems with anger and depression that she thinks of her tied to her being bipolar. ?
What causes bipolar?
Mood disorders are not fully understood. The average age of onset at about 20 + -. It is generally believed that chemical imbalances in the brain of a person with bipolar disorder and the endorphins that are responsible for us to feel good, it changes. Neurotransmitters regulate endorphins and messages in the brain is biased. Also to traumatic events can contribute. With Bi-Polar should be a period of manic mood. Some of the general symptoms are: sadness, hopelessness, low self esteem, feeling inappropriate guilt, decreased interest, decreased energy, physical problems, hypersensitivity to failure or rejection Irritability and aggressiveness and hostility. It seems that this conforms to their students. Obviously it has been diagnosed, but may need to go to a psychiatrist if it is stopped, to take their medication adjusted. I hope that helps. I am a counselor, and if you want to send me an email for more information and suggested reading, which would be fine. God Bless Reggie