When Jen Wight was sitting in a doctor's surgery in Sydney, Australia, she had a lightbulb moment. She suddenly believed she was the American actor Cameron Diaz. The truth was very different of course. She was a new mum, and this was just the beginning of a series of unsettling delusions. Jen Wight was suffering from postpartum psychosis.

Image: Jen Wight

Credit: Catherine Cullen