"The ballet world gives you such a message to look like a child," she said. "They are pretty flat-chested and they look like kids. The notion of being sexual or being a woman -- it's not uncommon to struggle with that.
But could Natalie Portman's character have carried off the demanding ballet performance in a psychotic state? Doctors say it would have been "unlikely."
"Psychosis usually interferes with a person's ability to function," said psychiatrist Lamberti. "However, artists and musicians have been known to perform despite the presence of psychosis. For a dancer who is trained to cope with pain and other distractions, it might be possible to perform in a psychotic state depending on the severity of the psychosis.".
"It may be possible for them to cope to an extent at a pretty high level, but it's not typical," he said. "Still, human resilience is remarkable."