“It was like a dentist drilling on steroids... Pressure and pain started coursing from inside my right ear, down my jaw, down my neck, and into my chest,” says Carrie.

“It was like a dentist drilling on steroids... Pressure and pain started coursing from inside my right ear, down my jaw, down my neck, and into my chest,” says Carrie. We’re disguising her and not using her last name because she’s still a working FBI agent.

Days later, she says, her phone battery swelled until it broke the case. She also says she felt like she has early Alzheimer’s – with her short- and long-term memory impacted.

“I was not the same person,” says Carrie.