What causes bipolar II disorder is unknown, but genetics is a primary factor. If one or more of your parents has the mood disorder, you are more likely to develop bipolar disorder. Other contributing factors include stress, illness, death, or a job loss. Also, researchers believe that bipolar disorder may be caused in part by an imbalance in any or all of the brain chemicals (neurotransmitters) norepinephrine, serotonin, and dopamine.
A Answers (3)
Michael Roizen, MD, Internal Medicine, answered
Honor Society of Nursing (STTI) answered
Bipolar II disorder may be caused by a number of factors. Some people may have a genetic predisposition for the disorder, and an imbalance of chemicals in the brain may cause episodes of depression and mania. Sometimes a traumatic event that causes a lot of stress can cause bipolar II disorder to develop. Other possible causes include an abnormal amount of hormones and drug use.
Ronald R. Fieve, Psychiatry, answered
Most psycopharmacoloists believe that there are genetic connections. Negative behaviors such as sexual indiscretions, substance abuse and gambling are often behaviors inside the family. A few professionals think that these features coincide with the wide "mood swing" of bipolar disorder.
Ronald Fieve MD