A case study published in the Archives of Sexual Behavior reveals that a 24-year old software professional in India developed blinding headaches every time he watched x-rated videos.
The man, who was unidentified, claimed that he suffered "severe, exploding" headaches within 10 minutes of watching any x-rated videos and this went on for over a period of two years before he decided to quit watching such scenes in order to avoid the headaches.
Researchers from Guru Gobind Singh Indraprastha University in New Delhi said that the headaches developed only when he watched videos and not during sex or masturbation.
He was then treated by a team of neurologists who were baffled by his condition before suggesting that the headaches could have caused by pain-sensing nerves in the face and jaw which become sensitive during "heightened emotional state associated with viewing pornography". He was also advised to take ibuprofen and paracetamol around 30 minutes before watching such videos.