When is it a huge relief to hear you have a parasite lurking in your brain? When it's not a cancerous brain tumor.
They’re small, sneaky, and likely to make you sick. From viruses, to bacteria, to pesky protozoa, here are the latest findings on the parasites that live among (and on, and in) the creatures of the Earth.
Last December, a tourist in Hawaii ate a slug on a dare — not realizing, of course, a wiggly brain-loving parasite was along for the ride.
Meet the ubiquitous "face mites" that live in your pores, eat your grease and have sex on your face while you sleep.
A new report describes five cases of "extreme" sand flea infections in Colombia, showing that life-threatening illnesses with this parasite still occur.
A surprising number of dogs working for the U.S. Department of Homeland Security are infected with this parasite, according to a new study.
Fossil fly pupae contain evidence of a fascinating —and deadly — story of insect parasitism in the ancient world.
A striking painting called "The Host" is based on the artist's personal experience with a parasitic worm that he discovered in his eye.
A Tennessee teen's summer trip to Florida turned nightmarish after he contracted hookworms from playing in sand at the beach.
When a woman in Russia noticed a small lump under her left eye, she snapped a selfie. Then, the lump moved.