Sufferers even claim they feel the baby "kick." What the hell?
We'll let Sigourney Weaver handle this one.
It's not like we haven't had time to study it; reports of false pregnancy have been around as far back as recorded history goes. Hippocrates (the dude the Hippocratic oath comes from) wrote about women with the disorder around 300 BC. In one of the most famous cases, the Queen of England, Mary I or Bloody Mary, was so desperate to bear a child that she had a fake pregnancy. The disease reemerged again in the famous case of "Anne O," who developed a fake pregnancy after imagining being impregnated by her doctor Josef Breuer. Breuer later talked about the strange case to the famous psychologist Sigmund "you want to bone your mother" Freud, who was so fascinated by it that it became the basis of his work in the field of psychotherapy.
"A ghost baby told me you secretly want to kill your father."