http://www.boingboing.net/2011/01/22/wo ... -by-h.html
Woman paralyzed by hickey
A 44 year old woman in New Zealand presented with partial paralysis at Auckland's Middlemore Hospital emergency department; after examination, the doctors concluded that she'd suffered a mild stroke caused by a hickey near a major artery in her neck. She recovered after being treated with anti-coagulant.
"Because of the physical trauma it had made a bit of bruising inside the vessel. There was a clot in the artery underneath where the hickey was."
Wu said the clot dislodged and traveled to the woman's heart, where it caused a minor stroke that led to the loss of movement.
"We looked around the medical literature and that example of having a love bite causing something like that hasn't been described before," he said.