Thanks for using health care magic for posting your query.
I have gone through your given history in detail.
In your description you have failed to mention the current symptoms.
cannot be diagnosed until you are 18 yrs old. moreover personality disorder do present with mood like symptoms and can confuse a GP initially.
For differentiating a mood disorder
and a personality disorder you should visit a specialist.
If your symptoms have been present this long and with out remission, it is more likely to be a personality disorder. The final diagnosis can only be made after a good mental state examination.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.