Here’s a story from a medical journal: One woman’s sex changes when she has seizures. We learned from the pages of the journal Epilepsy and Behavior that the woman has a tumor located near her amygdala and abnormal activity on the right side of her brain. After she has a seizure, she believes her gender has changed.
“I’m no longer feeling to be a female. I have the impression to transform into a male. My voice, for example, sounds like a male voice that moment. One time, when I looked down to my arms during this episode, these looked like male arms including male hair growth.”
At the same time, she perceives that females around her are males. “One time another woman, a friend of mine, was in the same room, I perceived also her as becoming a male person including changing sound of her voice.” Anti-convulsive drug treatment has helped resolve her gender-altering problem. [Mind Hacks via The Daily What]