Kids can definitely get Bipolar, especially if one (or both) of the parents are Bipolar.
No.
No.
Its over 9000.
Bipolar does run in families, though it doesn't affect everyone.
Bipolar is often inherited. A common trigger is a relationship which creates insecurity.
No
unknown
can it? yes, dramatically.
It doesn't. Get lost!
no known effect
Yes. Juvenile Rheumatoid Arthritis (JRA) can appear in kids that young.