Via Neatorama, the strange tale of a boy allergic to nearly all foods.

Doctors found that he was allergic to nearly everything he ate, including wheat, gluten, dairy products, eggs and soy products.
…
They took him off all food, feeding him a liquid formula through a gastric tube inserted through his nose. They then introduced him to one food at a time, making sure he could tolerate it before adding another. Recently, tuna joined chicken as a protein source. [emphasis mine]

The list of foods he is allergic to is more than a little similar to the results of my own food allergist adventures; the difference being, of course, that my allergies are mostly only a inconvenience, and have not, to date, caused blood to spew forth from both ends.