300 actress Lena Headey was diagnosed with clinical depression as a teenager, and still suffers from the condition.
Headey, whose school days were "really hard", blames her troubled childhood for triggering her continuing depression.
She says, "I was diagnosed when I was 15, and it comes and goes. I may suffer from it once or twice a year, but I now recognise it and deal with it.
"I don't use medication because I'm so worried about becoming dependent on it, but I can understand people who do, because you do go through the most horrendous feelings of isolation."
The 33-year-old star, who once ran away from home as a teen, occasionally has suicidal thoughts today.
She says, "When the depression comes, it's very intense and you can't see beyond it."
Everything is out in the open on this week’s episode of Game of Thrones. Do we even need to say this anymore? Spoilers ahead. So...