What was wrong with Effy Stonem?

What was wrong with Effy Stonem?

She begins to have psychotic episodes and delusional symptoms and Freddie realizes that Effy has developed psychotic depression. She attempts suicide but Freddie, foreseeing this, saves her and she is taken to hospital and later, institutionalized.

What is Effy Stonem personality?

Effy is a mysterious and rebellious embodiment in the Skins franchise. These characteristics of being “rebellious” and “mysterious” are innate in everyone.. It's a survival instinct of sorts.