Maybe it all began with a bug bite, from a bedbug that didn't exist.

One morning, I'd woken up to find two red dots on the main purplish-blue vein running down my left arm. It was early 2009, and New York City was awash in bedbug scares: they infested offices, clothing stores, movie theatres, and park benches. Though I wasn't naturally a worrier, my dreams had been occupied for two nights straight by finger-long bedbugs. It was a reasonable concern, though after carefully scouring my apartment, I couldn't find a single bug or any evidence of their presence. Except those two bites. I even called in an exterminator to check out my apartment, an overworked Hispanic man who combed the whole place, lifting up my sofa bed and shining a flashlight into places I had never before thought to clean. He proclaimed my studio bug-free. That seemed unlikely, so I asked for a follow-up appointment for him to spray. To his credit, he urged me to wait before shelling out an astronomical sum to do battle against what he seemed to think was an imaginary infestation. But I pressed him to do it, convinced that my apartment, my bed, my body had been overrun by bugs. He agreed to return and exterminate.

Concerned as I was, I tried to conceal my growing unease from my coworkers. Understandably, no one wanted to be associated with a person with a bedbug problem. So at work the following day, I walked as nonchalantly as possible through the newsroom of the New York Post to my cubicle. I was careful to conceal my bites and tried to appear casual, normal. Not that "normal" means a lot at the Post.

Though it's notoriously obsessed with what's new, the Post is nearly as old as the nation itself. Established by Alexander Hamilton in 1801, it is the longest continually run newspaper in the country. In its first century alone, the paper crusaded for the abolition movement and helped promote the creation of Central Park. Today the newsroom itself is cavernous yet airless, filled with rows of open cubicles and a glut of filing cabinets packed with decades of unused, forgotten documents. The walls are freckled with clocks that don't run, dead flowers hung upside down to dry, a picture of a monkey riding a border collie, and a big foam Six Flags finger, all memorabilia from reporters' assignments. The PCs are ancient, the copy machines the size of small ponies. A small utility closet that once served as a smoking room now holds supplies, and is marked by a weathered sign warning that the smoking room no longer exists, as if someone might accidentally wander in for a cigarette among the monitors and video equipment. This has been my eccentric little world for the past seven years, since I started here as a seventeen-year-old intern.

Especially around deadline, the room buzzes with activity - keyboards clacking, editors yelling, reporters cackling - the perfect stereotype of a tabloid newsroom.

"Where's the fucking picture to go with this caption?"

"How is it that he didn't know she was a prostitute?"

"What color were the socks of the guy who jumped off a bridge?"

It's like a bar without alcohol, filled with adrenaline-soaked news junkies.

Brain on Fire : My Month of Madness, Susannah Cahalan

Brain on Fire : My Month of Madness, Susannah Cahalan