These killers lie dormant, waiting for the right time to strike. Eleven-month-old Garrett Richardson ingests the eggs of a worm, and within days the creature travels to his brain and goes about ...

Now in its third gut-wrenching season, “Monsters Inside Me” (7 p.m., Animal Planet) explores those tiny microscopic bugs that dwell inside every human being. Most of the time, such bacteria help us ...

A man suddenly grows a pimple that seems minor at first, but eventually oozes and makes his face swollen. A young man that works at a homeless shelter suddenly starts to feel a sharp pain in his back.