Do your family members have a personality disorder?

My dad definitely suffers/has suffered from very bad episodes of depression. He used to see a psychiatrist, which helped him a huge amount. His personality has never effected me negatively though (apart from the fact that I take after him in regards to depression), and he's probably the nicest person I know. His brother, my uncle, works in psychiatry which is probably a reason why it didn't seem as daunting a option to him as it does to a lot of people in the same position. I don't think my mum has ever suffered in the same way, although she's slightly more closed off with me than my dad is so I'm not 100% sure.