yes
You can develop it from an injury or from drug use, yes.
yes they can. anyone can become depress
There are many causes for depression and bipolar disorder. One can develop these symptoms due to stress, life changes, diet and lifestyle habits, and injury or illness.
around 10%
Yes. Children with one bipolar parent have a 30% chance of developing bipolar disorder. Even children of bipolar parents who do not develop bipolar disorder are at increased risk (compared to children who do not have a bipolar parent) for other psychopathology such as ADHD, learning disorders, mood disorders, anxiety disorders, etc. Children with two bipolar parents are at an even greater risk of developing bipolar disorder.
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.
around 10%
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.
The causes of bipolar disorder have not yet been precisely determined; however, genetics seem to play a large role. 80-90% of people diagnosed with bipolar disorder have a family history of either bipolar or major depression. However, this does NOT necessarily mean that someone with such a family history will inherit the genetic predisposition of the disease, or if they do, it will eventually develop into symptoms. The inheritance of bipolar disorder is not simple - it involves many genes, some of which are still being discovered and researched.
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.
Bipolar NOS is a category for bipolar states that do not clearly fit into the bipolar I, II, or cyclothymia diagnoses.