unknown, its probably not a single gene but instead many
Yes. If left untreated, bipolar 2 can easily turn into bipolar 1 or possibly even rapid cycling bipolar disorder. (Second User) Yes, even with treatment (although it is much less likely in such a case) bipolar two disorder can become bipolar one disorder. This would happen when the hypomanic episodes of Bipolar 2 become more severe and harmful manic episodes. This change has been known to most often happen after somebody has had the disorder for some time. To clarify the first answer: Rapid cycling can occur in any type of bipolar disorder. It is not really its own type of bipolar disorder, rather, it is a condition that can occur with a bipolar disorder. It refers to a person who experiences four or more bipolar mood swings in a year. This can also develop over time or be a part of the disorder from the start.
Bipolar disorder has a genetic component - it does seem to run in families, and if you have people in your family who have bipolar disorder, you have a higher chance to have it yourself. However, there is more than just genetics causing it - scientists haven't figured out the whole think, but they know it is more than just a gene or group of genes. Some people can grow up in the same family and have the same genes, but not develop bipolar disorder.
If you can control your Bipolar Disorder with the medications, chances are that you can stay in the Navy. However, if your Bipolar Disorder becomes uncontrollable, then there is a possible chance that you cannot be in the navy. There isn't much that can be said because it all depends on how well you can control the Bipolar Disorder with your medications.
Usually threw the parents but, its also possible for your parents sibling to have it, meaning they carry the gene which can be passed onto you. someone who isn't related to anyone can develop bipolar disorder due traumatic psychological injury.
Bipolar disorder
Bipolar disorder is generally caused by genetics.
The correct term is bipolar disorder. Some people call it a disease though.
a disorder
http://blogs.psychcentral.com/bipolar/2009/01/bipolar-disorder-qa-how-close-are-we-to-a-bipolar-cure/
Yes, stress makes Bipolar Disorder behavior worse. My daughter is Bipolar.
It's not known to be an effective treatment for bipolar disorder.