A 25-year-old woman in Japan who had lived a mostly sedentary life decided to get moving with a home fitness video game. About three weeks later, a sudden pain struck the left side of her neck in the middle of a workout. Two days after that, she was in an emergency department with numbness on one side of her body and part of her vision gone.
Brain scans showed she had suffered a stroke. The likely source was a tear in the wall of one of the two arteries that run up the back of the neck to feed the brain, a condition called vertebral artery dissection. Radiologists at Gunma University Hospital described the case in the American Journal of Case Reports, published Sept. 15, 2025.