The condition, also known as "hair-pulling disorder," involves recurrent, irresistible urges to pull out hair.

Munn spoke about her experience with trichotillomania – a mental health condition that “involves frequent, repeated and irresistible urges to pull out hair from your scalp, eyebrows or other areas of your body,” according to the Mayo Clinic – while appearing on Monday’s episode of the “Armchair Expert” podcast.

Olivia Munn opened up about Trichotillomania and revealed that the hair-pulling disorder first started when she was dating Chris Pine. She spoke about getting honest about the pressures of early fame and how online criticism triggered her condition.