A 35 year old woman suffered a paralytic stroke after having sex with her boy friend. A case repost published in Journal of Stroke and Cerebrovascular Disease revealed that the stroke paralyzed many functions of the woman’s left side and her speech became slurred as she had lost sensation on the left side of her face.

According to doctors birth control pills increase the risk of blood clots. Sexual intercourse can cause pressure changes in the heart and enable the clot to travel through the hole from the right atrium to the left one.

In the case of the present patient, the doctors found a small clot formed in one of the veins in her thigh. It broke loose and moved to heart's upper right pumping chamber.

"In this case, there was a hole in a wall of the heart. Pressure changes in the heart, triggered by sexual intercourse, enabled the clot to travel through the hole from the right atrium to the left atrium," Jose Biller, one of the doctors from Loyola University Medical Centre, said.

"From there, the clot traveled up to the brain. It lodged in a narrow blood vessel, blocking blood flow to an area of the brain that controls movements on the left side of the body," Biller said.