Depression is a serious mental disorder with many forms and variations. Bipolar depression is one of them. Can you define what bipolar depression is? Do you know its signs and symptoms? Do you know how to distinguish bipolar depression from major depression? If you can answer “yes” to all those questions – use this quiz to find out how well you understand bipolar depression. Even if you cannot answer positively to the above mentioned questions - you are welcome to go ahead with this quiz – it will reveal you some of the key facts on bipolar depression.